ormulate the null and alternative hypotheses. Identify whether it is one-tailed or two tailed. If the hypothesis is one-tailed, identify its direction whether left or right. Write your answer on a separate sheet of paper. Note: You need to provide 3 answers (null hypothesis, alternative hypothesis, and ___-tailed test) for each question.

The following table contains the number of successes and failures for three categories of a variable. Test whether the proportions are equal for each category at the α=0.1 level of significance.     Category 1 Category 2 Category 3   Failures 32 51 57 Successes 39 54 73 State the hypotheses. Choose the correct answer below.     A. H0​: The categories of the variable and success and failure are independent. H1​: The categories of the variable and success and failure are dependent.   B. H0​: The categories of the variable and success and failure are dependent. H1​: The categories of the variable and success and failure are independent.   C. H0​: p1=p2=p3 H1​: At least one of the proportions is different from the others.   D. H0​: μ1=E1 and μ2=E2 and μ3=E3 H1​: At least one mean is different from what is expected. What is the​ P-value?   nothing ​(Round to three decimal places as​ needed.) What conclusion can be​…

A decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 66%. Suppose that we have reason to believe that this proportion has changed, and we wish to carry out a hypothesis test to see if our belief can be supported. State the null hypothesis H 00 and the alternative hypothesis H, that we would use for this test. H, :0 H, :0

When using the 4 step hypothesis testing method, the alternative hypothesis __________? a. is symbolized by: H1 b. is symbolized by: H0 c. states that the two population means are equal d. must be directional in nature (must be a one tailed test)

Perform a hypothesis test at a 5% level of significance to see if the proportion of white individuals who are fatally shot by police is less than the total proportion of white individuals in the United States, which is approximately 60.1% according to the U.S. census bureau.  State your null and alternative hypotheses in mathematical notation

Answer D

A sociologist wants to study what proportion of people have significant relationship problems due to financial stress. A previous study she is aware of estimated it to be 32% but she believes this has increased in modern times. She collects a random sample of 150 people and 63 of them report relationship problems due to financial stress. Conduct an appropriate hypothesis test in questions #22-#25. Compute the Z-score for this hypothesis test and round to two decimal places. z = 1.58 z = 2.06 z = 2.63 z = 0.84

View the information below and respond accordingly.   When you perform a hypothesis test, there are four possible outcomes depending on the actual truth (or falseness) of the null hypothesis H0 and the decision to reject or not. The outcomes are summarized in the following table: Table 9.2 ACTION H0 IS ACTUALLY True H0 IS ACTUALLY False Do not reject H0 Correct Outcome Type II error Reject H0 Type I Error Correct Outcome

Robert, a starting player for a major college basketball team, made only 38.4% of his free-throws in previous seasons.  During the summer, he worked on developing a softer shot in hopes of improving his free throw accuracy.  In the first eight games of the season, Robert made 25 free throws of 40 (or 62.5%). We wish to test if the practice helped.  Which of the following are the appropriate null and alternative hypotheses, letting p denote his new free-throw shooting probability   The null hypothesis is H0:                             ["", "", "", ""]            The alternative hypothesis is Ha:

A study found that 13% of Americans have seen or sensed the presence of an angel. A contingent doubts that the percent is really that high. It conducts its own survey. Out of 76 Americans surveyed, only two had seen or sensed the presence of an angel. As a result of the contingent's survey, would you agree with the study? Will you reject the null hypothesis or not?