Here is a bivariate data set. X y 4553885 45 52 MENGES 7 17 54 40 49 11 51 57 38 Find the correlation coefficient and report it accurate to four decimal places.

Q: note that these participants all said they would pay not to receive the shock in an earlier portion…

A: n1=18, x¯1=1.47, s1=1.46n2=24, x¯2=1, s2=2.32

Q: distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that…

A: NOTE:- According to bartleby guidelines expert can solve maximum three subpart of a question and…

Q: 1. You are asked to determine whether laptop brand A charges a higher premium for its laptops than…

A: Here is the R-code to create a scatter plot of price vs. performance: This gives the following…

Q: joyment score" of 4.35 with standard deviation 1.95. Is there significant evidence conclude that…

A: Referring back to the interesting series of tests by Wilson et. al. in Science 2014, participants…

Q: Suppose z is the standard normal variable. Draw the normal curve for each of the following…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: Fill in the table  2. State the null and alternative hypothesis (symbols, not words). 3.calculate…

A: Pnum Pre-treatment Post-treatment 1 17 15 2 14 15 3 17 12 4 13 7 5 19 11 6 17 15 7 13…

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: From the provided information, Sample size (n) = 588 55% of them would erase all of their personal…

Q: Find the mean and variance for the binomial distribution, P=0.29 and n= 13 Round to two…

A: Answer: From the given data, For the binomial distribution, P = 0.29 n = 13

Q: Mean= Variance= B Standard Deviation= 19 20 21 Find the mean, variance, and standard deviation of…

A: Given that  Probability distribution table x 19 20 21 22 23 P(x) 0.24 0.23 0.31 0.11 0.11…

Q: Identify the null hypothesis, alternative hypothesis, test statistic, p-value(s), c about the null…

A: Sample size n =11000 Favorable cases x =5720 Sample proportion p^=x/n  =5720/11000 =0.52

Q: Testing: Ho: = 14.56 H : μ > 14.56 Your sample consists of 22 subjects, with a mean of 14.7 and a…

A: Answer  Given  Population mean=14.56  Sample mean = 14.7 Sample standard deviation=2.68 Sample size…

Q: The following data lists the ages of a random selection of actresses when they won an award in the…

A: The given claim is that the population of ages of Best Actresses and Best Actors differences have a…

Q: . Calculate the obtained t  2. what is the critical value of t, assuming alpha =.05 a) 2.101 b)…

A: The data is given on pre-treatment and post-treatment for the 10 clients. Sample size (n) = 10 Level…

Q: Question 1: A researcher is interested in the proportion members of a local community who live in…

A: total members=350  No of member of  a single income household=75

Q: When 2 events are mutually exclusive then p (a or b)=

A: Suppose two events are a and b.

Q: Suppose a clinical psychologist sets out to see whether sexual orientation is related to…

A: In the given scenario, one of our variable of interest is of continuous type and the other variable…

Q: c) Write down the contrasts (calculate by hand, or use the statistical package of your choice) and…

A: (i) Contrast for Mathematics-State A vs Mathematics-State B: H0:μMA=μMBH1:μMA≠μMB (ii) Contrast for…

Q: Assume that the amounts of weight that male college students gain during their freshman year are…

A: a mean of  μ=1.1 kg and a standard deviation of σ=4.5 kg.If 9 male college students are randomly​…

Q: A 35% discount on a smart phone amounts to $665. What is the phone's list price?

A: Discount = $ 665 = D Discount = 35 % =d =0.35

Q: A sample of 42 observations is taken from a normal population with a standard deviation of 8. The…

A: Answer: From the given data, Sample size(n) = 42 Mean (X¯) = 45 Standard deviation(σ) = 8 99%…

Q: agency consumer safety. One thing the FDA regulates is the allo- insect parts in various foods. You…

A: Sample size n =37 Sample mean=79 Population standard deviation =10 NOTE:- According to bartleby…

Q: Many studies have been conducted to test the effects of marijuana use on mental abilities. In one…

A: Let X1 denote the light marijuana users and X2 heavy marijuana user We assume that X1 has normal…

Q: 4 Homework a. Compute SST, SSR, and SSE (to 3 decimals). The following data show the brand, price…

A: (a)   Use EXCEL to determine the values of SST, SSR and SSE.   EXCEL procedure:   Go to EXCEL Go to…

Q: You may need to use the appropriate technology to answer this question. In order to determine…

A: The question is about paired t test Given :   To find : a ) Test stat b ) p value and conclusion

Q: A researcher is interested in seeing if negative political ads against an opponent (group one) are…

A: Sample mean (x̅1) = 7.07Sample mean (x̅2) = 9.44Sample size (n1) = 20Sample size (n2) = 20Standard…

Q: baseball team claims that the mean length of its games is less than 1.4 hours. State Ho and H, in…

A: The claim is that the mean length of a basketball game is less than 1.4 hours.

Q: The following table reports prices and usage quantities for two items in 2009 and 2011. (Round your…

A: (a) To calculate the price relative for each item, we divide the unit price in 2011 by the unit…

Q: Find standard deviation & 90% confidence interval for population mean (___,___)

A: The data shows the 12 randomly selected college students GPA.

Q: Find a 98% confidence interval for the population standard deviation o.

A: Here given sample data of amount of juice in Juice bottle... Here we will use chi square for…

Q: alll. know whether this effect can be duplicated with "fake" swear words, or even by repeating a…

A: Anova is used to to test more than two means.

Q: Find the minimum sample size n needed to estimate  for the given values of​ c, ​, and E. c=0.98…

A: The population standard deviation is σ = 9.8. The margin of error is E = 1.

Q: A grocery store manager did a study to look at the relationship between the amount of time (in…

A: n= 9 observation  x y (x-x) (y-y) (x-x)(y-y) (x-x)2 (y-y)2 5 48 -13.7778 -23.7778 327.6049…

Q: he claim is that for a smartphone carrier's data speeds at airports, the mean is μ = 17.00 Mbps. The…

A: Sample size n =16 Test statistic t = -2.084

Q: 7. Assume that you want to use a 0.05 significance level to test the claim that the paired sample…

A: The claim is that the paired sample data come from a population for which the mean difference is…

Q: Referring to this table, determine the A value corresponding to the z value for a 6-minute-assembly…

A: Mean,  x=7 minutes Standard deviation, s=0.4223 minutes The table on the area under the normal…

Q: Systolic blood pressure levels above 120 mm Hg are considered to be high. For the 100 systolic blood…

A: We have given thatMean(µ) = 120Sample size (n) = 100Sample mean (x̅) = 120.46000Standard deviations…

Q: The test statistic of z = 0.62 is obtained when testing the claim that p>0.9. a. Identify the…

A: GIVEN DATA, test statistics of z=0.62claim:p>0.9we have to answers of parts a,b,c for the given…

Q: Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value,…

A: (a) That is, there is no evidence to conclude that the commercial truck owners violate laws…

Q: A popular theory is that presidential candidates have an advantage if they are taller than their…

A: a. The claim that the population of heights for presidents and their main opponents difference have…

Q: When one unit of pesticide is applied to a crop of tomatoes, there is a 50% chance that 50% of the…

A: The value of statistical life (VSL) is a measure used in economics to represent the value that…

Q: Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho:…

A: n=100, X=70, p=0.6

Q: To estimate the average cost of maintaining houses in CA, a home warranty company randomly samples…

A: n=200Standard deviation =$550Mean =$950CI=98%

Q: 4. Use a 0.01 significance level to test the claim that peanut M&M candies have weights that vary…

A: To test the standard deviation, we use Chi-square-test given by χ2=n-1s2σ2. Where n is the sample…

Q: What is the p value if, in a right tail hypothesis test, Z statistic = +1.97 Round to four decimals

A: Answer: From the given data, The test is right tailed Test statistic (Z) = 1.97

Q: Use contingency table to test if the change in heart rate after using a neutral word…

A: The data is given in the summary table for neutral words and real swear words. let us take the…

Q: Ethan Temeles and W. John Kress of Amherst College studied the relationship between varieties of the…

A: Consider the given data: Heliconia varieties Flower length bihai 47.12 bihai 46.75 bihai…

Q: An Internet provider is trying to gain advertising deals and claims that the mean time the…

A:

Q: Find the value of the test statistic z using p-p Z= pq n The claim is that more than 80% of workers…

A: Sample size n =580 Favorable cases x =516 Sample proportion p^=x/n  =516/580 =0.8896551724 =0.8897

Q: A data set about speed dating includes "like" ratings of male dates made by the female dates. The…

A: n=19, sample mean X̄=6.51, s=2.04 , level of significance ɑ=0.05

Q: In a random sample of eleven people, the mean driving distance to work was 18.2 miles and the…

A: Sample size (n) = 11 Sample mean (x̄) = 18.2 miles Sample standard deviation (s) = 4.1 miles…