Subjects SPECIMEN 1 3 4 5 7 8. Method 1 1.2 1.3 1.5 1.4 1.7 1.8 1.4 1.3 Method 2 1.4 1.7 1.5 1.3 2.0 2.1 1.7 1.6
Q: he DASS-21 questionnaire is a validated measure of depression, anxiety, and stress. For the general…
A: Given that the mean for the anxiety for the population is 4.2 As it scales from the questions 0 to…
Q: If there is a main effect of maternal diet (alcohol vs non alcohol), is the main effect of maternal…
A: From the above figure, the significance value for diet variable is '0' which means there is no…
Q: A published report of a repeated-measures research study includes the following description of the…
A: Given information: The result show significant difference among the treatment condition. F(2,…
Q: The scores of 40,000 county employees who took a recent civil service exam were normally distributed…
A: It is given that the scores follow normal distribution with mean 70 and standard deviation 10.…
Q: Recall that small effects may be statistically significant if the samples are large. A study of…
A: Sample sizes n1=104 , n2=46 Favorable cases x1=13 , x2=8 NOTE:- According to bartleby guidelines…
Q: A newly installed automatic gate system was being tested to see if the number of failures in 1,000…
A: The data is given asTruckEntry failuresExit failures1445024053355554565656255652507455184547sample…
Q: Dr. Y collected data on local people’s viewpoints about the building of the 2020 Olympic venue in…
A: Solution : Given : Local people’s viewpoints about the building of the 2020 Olympic venue in Tokyo,…
Q: 6.- The day after Thanksgiving-called Black Friday–is one of the largest shopping days in the United…
A: A confidence interval (CI) is a type of estimate computed from the observed data. It gives a range…
Q: Gay/lesbian Bisexual Heterosexual/Straight MG/L = 16 MBi = 17 MH/S = 22 Source SS df MS…
A: SSorientation=300,SSerror=2961There are three treatments and each treatment has 22…
Q: A manufacturer claims that 10% of women using the "pill" suffer from side effects. The Federal Drug…
A: It was found that 103 out of 900 women had side effects. Let p-cap be the sample proportion.
Q: A sample of 124 kissing couples were observed, with 44 of them leaning their heads to the left. Use…
A: The test statistic for One sample proportion test is as follows…
Q: You are asked to design a study to investigate the effectiveness of the Atkins diet (IV = diet, DV =…
A: Independent t test:Independent t test determines whether there is significant difference between the…
Q: A U.S. Food Survey showed that Americans routinely eat beef in their diet. Suppose that in a study…
A: Given information Illinois Texas µ µ1 µ2 n 49 64 x̅ 54.1 lb 60.4…
Q: Women are recommended to consume 1770 calories per day. You suspect that the average calorie intake…
A: For the given data Perform t test for one mean
Q: Patients with rheumatoid arthritis are at a greater risk of developing osteoporosis. The reasons are…
A: Given Information: Sample size(n) = 43 Mean HCT level (x) = 33.8 pg/ml Standard Deviation (σ) =…
Q: A cigarette manufacturer claims that his cigarettes have nicotine content that does not exceed 2.0…
A: Introduction: Denote μ as the true mean nicotine content in the cigarettes produced by the given…
Q: What is the F critical value?
A: Here the the groups are given as,Gay/lesbian,Bisexual or Heterosexual/straight.Let are the…
Q: In a study of the relationship between marble ownership and household income, the Grinch interviewed…
A: The regression is given by, y= a + bx Here, y : weight of marble owned by household (lbs) x :…
Q: Two groups of women are screened for human papillomavirus (HPV) infections of the uterine cervix.…
A: The true prevalence of HPV infection in the first group is 0.10.The true prevalence of HPV infection…
Q: After the detonation of a 20-kiloton nuclear bomb in China, scientists in Japan and the U.S.…
A: The following table is given: japan us 0.2 0.2 0.4 0.3 0.5 0.1 0.1 0.1 0.3 0.2 0.3…
Q: The claim is that for a smartphone carrier's data speeds at airports, the mean is μ=18.00 Mbps.…
A: Given information Hypothesized mean µ = 18.00 Mbps Sample size (n) = 24 The value of test…
Q: The DASS-21 questionnaire is a validated measure of depression, anxiety, and stress. For the general…
A: Hypothesis Ho: μ=4.2 vs H1: μ>4.2 test statistic=t=(x¯-μ)/s/n and df=n-1 When population…
Q: A college administrator wants to know if there is a significant difference between sexual…
A: Given,the data of different sex categories.sample size = 66 in total.To find the value of…
Q: Listed below are the overhead widths (in cm) of seals measured from photographs and the weights of…
A: Overhead width(X) Weight(Y) 7.6 141 7.1 110 9.5 154 7.8 170 8.4 232 9.1 177
Q: Are seatbelts effective at saving lives? We wish to examine whether or not the use of seatbelts…
A: Here we conduct Z test for two proportion.
Q: vo analysts measured the Calcium content of a homogenized banana sample. The results of 10 trials…
A: Null Hypothesis: H0: The two Analysts have same precision. Alternative Hypothesis: H1: The two…
Q: The old variety of a plant has 70% pink flowers. A new variety is developed. In a random sample of…
A: Given,n=93x=59p^=xnp^=5993=0.6344α=0.10
Q: /lesbian Bisexual Heterosexual/Straight MG/L = 16 MBi = 17 MH/S = 22 Source SS df MS F…
A: SStreatment=300,SSerror=2961There are three treatments and each treatment has 22…
Q: A normal population has a mean of μ = 25 on a communication effectiveness scale. After receiving a…
A: From the provided information, Sample size (n) = 4 Level of significance (α) = 0.05
Q: According to a CCH Unscheduled Absence survey, 9% of small businesses use telecommuting of workers…
A: Solution To test hypothesis we will use z distribution.
Q: A county environmental agency suspects that the fish in a particular polluted lake have elevated…
A: Given data: n1 = 5, n2 = 4 Sample I(From Polluted Lake) 0.523 0.723 0.523 0.623 0.523 Sample…
Q: untreated depression will lose at least one friendship while not receiving treatment. On the other…
A: We have to find out absolute risk of losing at least one proportion while dealing with untreated…
Q: The administrator of a school board in a large county was analyzing the average mathematics test…
A: Given Information: Regression equation - Predicted Math Score = 50.65 + 0.2634(MathDgr%)
Q: The athletic director at a large university compared the proportions of freshmen (1st year students)…
A: The hypothesis is, Null hypothesis: H0: There is no difference between proportions of freshmen and…
Q: find the Q3 (third quartile) position :for a some data with n=30 is
A: We have to find Q3 position for some data with n = 30.
Q: The average age of licensed drivers in a county is µ = 42.6, s= 10, and the distribution is…
A: The null and alternative hypotheses are, The test is two tailed test The level of significance is,…
Q: Patients with rheumatoid arthritis are at a greater risk of developing osteoporosis. The reasons are…
A: Given information: Sample size, n = 43 men The sample mean, x¯=33.8 pg/mL The population standard…
Q: a. For this study, we should use z-test for the difference between two population proportions b. The…
A:
Q: Which model do you believe would be the better model to use? Please write the best simple linear…
A: 1. From the information given the value of S for model Test score on math degree is 8.084 which is…
One company produces premium grade carbon steel for Katana Sword manufacturers. Two different analytical methods were
used to detect the contamination level of the carbon steel in 8 random specimens
From the table provided, Is there sufficient evidence to conclude that tests differ in the mean contamination level use? α = 0.01?
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- Women are recommended to consume 1720 calories per day. You suspect that the average calorie intake is different for women at your college. The data for the 12 women who participated in the study is shown below: 1837, 1618, 1820, 1846, 1640, 1700, 1655, 1473, 1563, 1840, 1796, 1854 Assuming that the distribution is normal, what can be concluded at the αα = 0.10 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean The null and alternative hypotheses would be: H0:H0: ? μ p Select an answer > < ≠ = H1:H1: ? p μ Select an answer ≠ = < > The test statistic ? t z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? > ≤ αα Based on this, we should Select an answer reject accept fail to reject the null hypothesis. Thus, the final conclusion is that ... The data suggest that the population mean…comparison of the precisions of two machines developed for extracting juice from oranges is to be made using the following data. Is there sufficient evidence to indicate that there is a difference in the precision of the two machines at the 5% level of significance? Machine A Machine B s2 = 1.4 ounces2 s2 = 3.1 ounces2 n=25 n=20Women are recommended to consume 1700 calories per day. You suspect that the average calorie intake is different for women at your college. The data for the 12 women who participated in the study is shown below: 1784, 1677, 1583, 1984, 1910, 1737, 1522, 1574, 1853, 1546, 1707, 1866 Assuming that the distribution is normal, what can be concluded at the αα = 0.10 level of significance? For this study, we should use The null and alternative hypotheses would be: H0:H0: H1:H1: The test statistic = (please show your answer to 3 decimal places.)
- Historically, Olympic officials have reported testosterone levels in general should be u = 538 ng/dL, with o = 189, with x being normally distributed. Summer Olympic sprinters (n = 8) from the U.S. were tested for testosterone levels the morning after the opening ceremonies. Their sample mean was ng/dL. Do these data indicate that the sprinters had an overall average testosterone level greater than 538? Use a = .05. State a, H,, H1, p-value, rejection, or non-rejection, and be certain to interpret your results.Ride services are on the rise, such as Uber and Lyft. You wondered if the recent news reports of crime occurring with these ride services impacted the usage of them, especially with women. You decide to conduct a survey about ride service usage among male and female college students. The results showed that 19 males use ride services and 11 do not. While 12 females use ride services and 18 do not. Calculate the chi-square statistic:A cigarette manufacturer claims that his cigarettes have nicotine content that does not exceed 2.0 milligrams. If a random sample of 10 cigarettes of this type have nicotine contents of 2.0, 2.3 1.7, 2.2, 1.9, 2.2, 2.0, 2.5, 2.1 and 1.9 milligrams, would you agree with the manufacturer's claim? a = 0.05. What is the correct set of hypotheses to test this claim? (Α) H0: μ 2.0 Β) H0:μ2.0; H1: μ # 2.0 c) HO:µ > 2.0; H1: µ 2.0
- The old variety of a plant has 70% pink flowers. A new variety is developed. In a random sample of 93 plants from the new variety, 59 had pink flowers. Test the claim that the percent of plants with pink flowers for the new variety is different than 70%. Use a 0.10 level of significance. Question 6 options: DO NOT Reject H0 Using a 0.10 level of significance there is not evidence to say the proportion of pink flowers is different than 0.70 Reject H0 Using a 0.10 level of significance there is evidence to say the proportion of pink flowers is not different than 0.70Dr. Guidry conducts a study examining the relationship between the number of friends one has and the experience of daily stress and life satisfaction. She randomly samples 1,500 elderly men and women in Nashville, Tennessee (the state capital), located in the southern United States. Below are her findings.• Life satisfaction and experience of daily stress: r = .57 (p = .01)• Number of friends one has and experience of daily stress: r = .09, not sig.• Number of friends one has and life satisfaction: r = .36 (p = .04) Which of the following conclusions can Dr. Guidry draw about the number of friends one has and life satisfaction based on her statistical analyses? a. The probability of her sample coming from a zero association population is about 4%. (correct answer) b. The probability of her sample coming from a zero association population is about 96%. c. The relationship is not statistically significant. d. The strong correlation means that the number of friends one has causes an…As an occupational health epidemiologist you are required to measure the effect of stress on the workers in your manufacturing plant. Two different tests previously developed to measure stress in industrial workers are selected: stress test alpha and stress test delta. The sensitivity and specificity of each test are shown below. Which test generates the greatest proportion of false negatives? Stress Test Alpha Stress Test Delta Sensitivity = 60% 75% M Specificity = 95% 90% Stress Test Alpha Stress Test Delta
- Thirty different video games showing drug use were observed. The duration times of drug use (in seconds) were recorded. When using this sample for a t test of the claim that the population mean is greater than 92 sec, what does df denote, and what is its value? what's the value of df?Please show work in Excel.A study was conducted of 90 adult male patients following a new treatment for congestive heart failure. One of the variables measured on the patients was the increase in exercise capacity (in minutes) over a 4-week treatment The previous treatment regime had produced an average increase of μ = 2 minutes. The researchers wanted to evaluate whether the new treatment had increased the value of μ in comparison to the previous treatment. The sample data yielded ?̅ = 2.17 and ? = 1.05: Using α = 05, what conclusions can you draw about the research hypothesis?