If a P-value is .043, what does that mean in terms of the value obtained for the test statistic?

Q: hat would you set your alpha-level at? Adrian examined the calcium intake in three groups of…

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Q: What is stated by the alternative hypothesis (H1) for an ANOVA? Explain. a. There are no…

A: ANOVA in statistics is the technique which is used to compare the population means when the number…

Q: A software company is interested in improving customer satisfaction rate from the 69% currently…

A: Given Hypothesized pop. proportion, p0=0.69Favorable cases,x=146Sample size,n=193Sample…

Q: Which of these best describes the conclusion we could make using a 5% level of significance? Select…

A: The decision in the hypothesis testing can be made using two important methods. They are the p-value…

Q: For the following observations (8,3,2, 12, 10), if all values are transformed into standardized…

A: The given observations are: 8, 3, 2, 12, 10

Q: summarized below in thousands. 1992: mean = 13,126; stdev = 675.3; n = 20 2012: mean = 14,197;…

A: The pooled standard deviation can be calculated as:

Q: If the P-value is 0.003 and the level of significance , , is 0.05 in a hypothesis test for a mean,…

A: Given,p-value =0.003and  level of significance(α)=0.05

Q: What statistical test should he use to analyze the data? a. Independent Samples t-test b. Chi…

A: From the given data, we have to test whether female employees are more likely or less likely to be…

Q: When the IV and DV are both numeric, which statistical test is most appropriate to use for…

A: Regression analysis is used to estimate the relationship between variables. There will be one…

Q: Heather runs a successful lawn-mowing business. She would like to estimate the true mean amount of…

A: We have given that  Sample size n =30 90% confidence interval . (40 , 55)

Q: ake a GRE practice test.   She then taught the students a relaxation exercise that they were to…

A: The dependent -samples t-test for a mean difference is used to compare the means of two related…

Q: According to a recent article about individuals who have credit cards, he mean number of cards per…

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Q: Suppose the null hypothesis is not rejected. State the conclusion based on the results of the test.…

A: Test is that whether the mean proce has increased.

Q: What is the margin of error for a 99% CI for a mean, when the sample size is 12, the sample average…

A: Given: Sample size, n = 12 Sample mean, x = 52 Sample standard deviation, s = 13 It follows a…

Q: Looking at the mean score for the Goodyear Silents (6) and their opponents (3.54)   would you expect…

A: Given Information: Mean score of good year silents = 6 Mean score of their opponents = 3.54

Q: Is the mean level in the sample significantly different from the population mean?   b. What…

A: Hypotheses can be constructed as: H0: µ=4.5 H1: µ≠4.5 Data collected from 5 college students is: 7,…

Q: A nutritionist seeks to conduct a clinical trial on the effects of eating papaya on cholesterol…

A: Answer D. What is the minimum number of people I need for the study?

Q: Three years​ ago, the mean price of a​ single-family home was ​$243,741. A real estate broker…

A: We want to tell you, which one is the correct choice.

Q: If the distribution of scores were normally distributed, the following would be true? -Mean = 36.5,…

A: Answer : - Given, the distribution of scores were normally distributed.                   Find the…

Q: An analysis was conducted to determine whether the average height of the 25 girls in the same class…

A: Here Avg height of 25 girls in the Same class is difference from population mean is checked Here…

Q: A software company is interested in improving customer satisfaction rate from the 66% currently…

A: From the provided information, A software company is interested in improving customer satisfaction…

Q: a claim is made that the height of a police officer is 5 feet 11 inches. to test whether this claim…

A: Let us take the null hypothesis that the height of a police officer is 5 feet 11 inches H0:μ = 5'11…

Q: A software company is interested in improving customer satisfaction rate from the 70% currently…

A: Given-                       Hypothesized Population proportion (p0) = 70% = 0.70…

Q: How would you explain conducting a scatter graph to someone who has never heard of correlation (but…

A: Scatter graph is a graph that is drawn to visualize the relationship between two variables ,x and y,…

Q: Which of the following significance levels gives you the greatest chance of finding a significant…

A: The level of significance is the probability of rejecting the null hypothesis when it is true.

Q: 52% of students entering four-year colleges receive a degree within six years. Is this percent…

A: Solution: Given information: n= 231 Sample size  x= 129 success  p^=xn= 129231=0.5584   Sample…

Q: Decide whether the following scenarios are example of type 1 error or type 2 error or neither? Use…

A: Explanation: The investigator is specifically interested to test whether the mean weight of babies…

Q: What is the computed value of the test statistic? A. 4.381 B. -4.381 C. -4.898 D. 4.898

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Q: Which problem represents a T-Test on Differences? A: Comparing the mean scores on final exams from…

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Q: A marketing manager for a cell phone company claims that more than 35% of children aged 10-11 have…

A: Assume that p is the true proportion of all children aged 10-11 that have cell phones.

Q: he margin of error for a 90% CI for a mean, when the sample size is 12, the sample average is 52,…

A: As the population standard deviation is known, we will use t distribution. Degrees of freedom =…

Q: A software company is interested in improving customer satisfaction rate from the 74% currently…

A: Z-Test:  Here the hypothesis test is for the population proportion. The test statistics compared…

Q: According to a recent article about individuals who have credit cards, the mean number of cards per…

A: Given : population mean = 4

Q: A software company is interested in improving customer satisfaction rate from the 50% currently…

A: The null and alternative hypothesis is defined as:

Q: A software company is interested in improving customer satisfaction rate from the 55% currently…

A: From the given information, The population proportion is, p=55%=0.55 The company sponsored a survey…

Q: in october 1947 the gallup organization surveyed 1000 adult americans and asked are you a total…

A: We have given thatn1 = 1000 , x1 = 378n2 = 1000 , x2 = 333Significance level (α) = 0.05Now,p̂1 =…

Q: A software company is interested in improving customer satisfaction rate from the 75% currently…

A: Hypotheses: The null and the alternative hypotheses are, H0:p=0.75H1:p>0.75

Q: Which of the following z-score values represents the location farthest from the mean? Question 21…

A: Solution-:Which of the following z-score values represents the location farthest from the mean?(a)…

Q: ou are testing a claim about a population mean of 24. Find the test statistic given the following…

A: Here the sample mean is 22, the sample standard deviation is 10 and the sample size is 65.

Q: A software company is interested in improving customer satisfaction rate from the 62% currently…

A: Population proportion is 0.62 Sample proportion is 90/135 =0.6667

Q: A software company is interested in improving customer satisfaction rate from the 55% currently…

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