A city is collecting data on two neighborhoods, one low income and one middle income, to see whether or not their residents would support an increase in local sales tax to pay for more city services. The city wishes to see if there is evidence to show that the first neighborhood (low income) has a lower level of support for the tax compared to the second neighborhood (middle income). You wish to test the following claim (HaHa) at a significance level of α=0.002       Ho:p1=p2       Ha:p1

The    Youth    Risk    Behavior    Survey    (a    study    of    public    high    school    students)    showed    that    45    of    675    girls    and    103    of    621    boys    had    been    in    a    physical    fight    on    school    property    one    or    more    times    during    the    past    12    months Using    5%    significance,    perform    an    appropriate    test    of    hypothesis    that    the    proportion    of    girlsinvolved    in    a    physical    fight    on    school    property    is    less    than    the    proportion    of    boys involved    in    a    physical    fight    on    school    property.Step    1:        H0:    ________________             Ha:    ____________________                             Significance    level    α    =0.05Step    2:    Check    necessary    data    conditions    and    compute    an    appropriate    test    statistic:Step    3:    Compute    corresponding    p-value

To determine if there is gender and/or race discrimination in car buying, a researcher put together a team of white males, black males, white females, and black females who were each asked to obtain an initial offer price from the dealer on a certain model car. The accompanying data are based on the results and represent the profit on the initial price offered by the dealer. Previous testing resulted in rejecting Ho: PWM HBM =HWF = HBF and concluding that the mean profit for the four race-gender groups differ. Use Tukey's test to determine which pairwise means differ using a familywise error rate of a = 0.05. Click the icon to view the data table. Use Tukey's test to determine which pairwise means differ using a familywise error rate of a = 0.05. Find the Tukey 95% simultaneous confidence intervals for all pairwise comparisons. The interval for the pairwise comparision HBM HWM is The interval for the pairwise comparision pwFPWM is The interval for the pairwise comparision HBF HWM is…

A marriage counselor has traditionally seen that the proportion p of all married couples for whom her communication program can prevent divorce is 80%. After making some recent changes, the marriage counselor now claims that her program can prevent divorce in more than 80% of married couples. In a random sample of 215 married couples who completed her program, 180 of them stayed together. Based on this sample, is there enough evidence to support the marriage counselor’s claim at the 0.05 level of significance? Perform a one-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. A. State the null hypothesis Hoand the alternative hypothesis H1. Ho: H1: B. Find the value of the test statistic. (Round to three or more decimal places.) C. Find the critical value. (Round to three or more decimal places.) D. Is there enough evidence to support the marriage counselor's claim that the proportion of married couples for whom her program…

Do adults (age 20–45) with children and adults without children have the same distribution of type of vehicle that is driven? In a large city, 130 randomly selected adults with children and 170 randomly selected adults without children were asked which type of car best describes the vehicle they primarily drive: car, truck, van, or SUV. A significance test will be conducted using the data to determine if there is convincing evidence at α = 0.05 that the distribution of type of vehicle driven differs between adults (age 20–45) with children and adults without children. What are the hypotheses for this test? H0: There is  in the distribution of vehicle type driven between adults (aged 20–45) with children and adults without children. Ha: There is  in the distribution of vehicle type driven between adults (aged 20–45) with children and adults without children.

A city is collecting data on two neighborhoods, one low income and one middle income, to see whether or not their residents would support an increase in local sales tax to pay for more city services. The city wishes to see if there is evidence to show that the first neighborhood (low income) has a higher level support for the tax compared to the second neighborhood (middle income). You wish to test the following claim (H) at a significance level of a = 0.01. Ho:p₁ Ha: P1 = P2 P2 You obtain a sample from the first population with 436 successes and 321 failures. You obtain a sample from the second population with 117 successes and 109 failures. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value =

You wish to test the following claim (Ha) at a significance level of a = Ho: P₁ = P2 Ha: P₁ P2 You obtain a sample from the first population with 120 successes and 403 failures. You obtain a sample from the second population with 39 successes and 278 failures. The test statistic is... in the critical region O not in the critical region critical value = ± test statistic = This test statistic leads to a decision to... reject the null hypothesis fail to reject the null hypothesis = 0.005. O There is not sufficient evidence to support second population proportion. [three decimal accuracy] [three decimal accuracy] As such, the final conclusion is that... There is sufficient evidence to support that the first population proportion is not equal to the second population proportion. first population proportion not equal to the

In a survey taken in 2020, 20 out of 50 women and 17 out of 45 men said that they felt our country was headed in the wrong direction regarding universal health care.   Do these data provide sufficient evidence at the 0.01 level of significance to conclude that the proportions of women and men that feel out country is headed in the wrong direction regarding healthcare are equal?   Use the P-Value Method of Testing.   In your work space below, you will need to have -1.  The null hypothesis, Ho 2.  The alternative hypothesis, H1 3.  The test statistic 4.  The type of test(left, right, two-tailed) and the p-value 5.  The decision to accept Ho or reject Ho

A researcher hypothesizes that people living in the South are more opposed to the legalization of marijuana than people living in the West or East (who do not differ from each other). In conducting a one-way ANOVA with this data, how should the alternative hypothesis (Ha) be stated? Ha: all means are not equal Ha: mMidwest# m West # m East Ha: mMidwest< m West = pEast None of the above

A cellphone provider has the business objective of wanting to determine the proportion of subscribers who would upgrade to a new cellphone with improved features if it were made available at a substantially reduced cost. Data are collected from a random sample of 500 subscribers. The results indicate that 135 of the subscribers would upgrade to a new cellphone at a reduced cost.  At the 0.05 level of significance, is there evidence that more than 20% of the customers would upgrade to a new cellphone at a reduced cost? How would the manager in charge of promotional programs concerning residential customers use the results in (a)?