(a) At alpha (a) =.05, does the following sample show that daughters are taller than their mothers?
(b) Is the decision close?
(c) Why might daughters tend to be taller than their mothers? Why might they not?

(a) At alpha (a) =.05, does the following sample show that daughters are taller than their mothers?
(b) Is the decision close?
(c) Why might daughters tend to be taller than their mothers? Why might they not?

(a) At alpha (a) =.5, does the following sample show that daughters are taller than their mothers?
First calculate the mean and standard deviation of the two sample.

variance={summation of X 2 - n(Mean) 2 }/(n-1)= 32.5252 =(205577-7*171.29^2)/(7-1)
standard deviation =square root of Variance= 5.7031 =square root of 32.5252

Please see the attached file.
A hypothesistest is used to test a claim. You get 1.75 as your test statistic and 1.59 as your critical value for a right-tailed test. Which of the following is the correct decision statement for the test?
A. Reject the null hypothesis
B. Claim the null hypothesis i

Question: Determine the p-value for each of the following hypothesis-testing situations:
a. H0: p = 0.25 and Ha: p does not = 0.25; z test value = 1.84
b. H0: u >/= 13.5 and Ha: u < 13.5; t test value = -1.94 d.f. = 10

A sample of n=9 scores is obtained from a normal population distribution with o-=12. The sample mean is M=60.
a- with a two-tailed test and o=.05,use the sample data to test the hypothesis that the population mean is u=65.
b- with a two-tailed test and o=.05, use the ample data to test the hypothesis that the population me

A legal researcher is studying the age distribution of juries by comparing them with the overall age distribution of available jurors. The researcher claims that the jury distribution is different from the overall distribution; that is, there is a noticeable age bias in jury selection in this area.The table shows the number of j

Decide whether the normal distribution can be used to approximate the binomial distribution. If it can, use the z-test to test the claim about the population proportion p for the given sample statistics and level of significance a.
^
A. Claim: p

Hypothesis, Null and Alternative, & P-values
Q1: What is a p-value in testing hypothesis?
Q2: How does this p-value help us to decide to/not to reject a Null hypothesis? What might happen if we do not use this p-value in particular, when we are rejecting a Null hypothesis?
Q3: What are the limits of these p-values t

What is the purpose of a hypothesistest? What goes in the null hypothesis and what goes in the alternate hypothesis? Why is it inappropriate to put a sample statistic in the hypothesis?
If you are testing the hypothesis
H0: population proportion is .5
H1: population proportion is not .5,
and you get .52 for the sample

A company has two different processes that make credit cards. Suspecting that machine B has a higher variability than machine A the manager orders a test to be run. The following data was collected:
Machine Machine B
Sample size nA= 30 nB=40
Sample Standard Deviation sA= 1.0

A classic tale involves for carpooling students who missed a test and gave as an excuse a flat tire. On the makeup test, the instructor asked the students to identify the particular tire that went flat. If they really didn't have a flat tire, would they be able to identify the same tire? The author asked 41 other students to ide

Consider the following hypothesistest:
Ho (null hypothesis): µ = 15
Ha (alternative hypothesis): µ ≠ 15
A sample of 25 gives a sample mean of 14.2 and sample standard deviation of 5. Answer the following questions regarding the hypothesistest.
a) At α = 0.05, what is the rejection rule?
b) Compute the value of