A repeated-measures, a matched-subjects, and an independent-measures study all produce a t statistic with df = 24. How many subjects participated in each experiment?

For each scenario listed on the left, determine whether the scenario represents an Independent Samples or Matched pairs situation by placing the appropriate letter in the box provided. ARR Comparing pain levels before and after treatment with magnetic therapy Comparing pain levels of a group receiving a placebo to a group receiving a medicine Comparing the number of speeding tickets received by men to the number received by women Comparing pre-test scores before training to post-test scores a. Independent Samples b. Matched Pairs

In a study, a random sample of 20 adults rated the effectiveness of advertisements. Each adult rated an advertisement that lasted 30 or 60 seconds. The block design in the accompanying table shows these ratings (on a scale of 1 to 5, with 5 being extremely effective). Use a = 0.05 and a technology tool and the given block design to perform a two-way ANOVA test. Click the icon to view the block design and ratings. Determine the null and alternative hypotheses for the main effects. Select all that apply. O A. Ho: The length of the ad has no effect on the rating. B. Ho: The rating has no effect on the advertising medium. Ha: The rating has an effect on the advertising medium. Ha: The length of the ad has an effect on the rating. O c. Ho: The advertising medium has no effect on the rating. D. Ho: : The advertising medium has no effect on the length of the ad. Ha: The advertising medium has an effect on the rating. : The advertising medium has an effect on the length of the ad. Ha: length…

A software company is interested in improving customer satisfaction rate from the 61% currently claimed. The company sponsored a survey of 196 customers and found that 129 customers were satisfied. What is the test statistic z?

A repeated-measures ANOVA produces SSbetween treatments  = 30 and MSbetween treatments = 10.  In this analysis, how many treatment conditions are being compared? Group of answer choices -3 -4 -5 -20

you compute a two-sample z statistic and it comes out to equal 1.6. What is the p-value if you are doing a two-tailed test? Enter a value between 0 and 100 corresponding to the percentage, e.g. if your p-value equals 2.4%, enter 2.4. Any correctly rounded version will receive full credit.

A variety of variables were measured for all tornadoes in the United States in 2017. (a) Since 1950, the proportion of tornadoes that have been F0 is 0.465. Test whether a different proportion of F0 tornadoes occur in Texas than nationally. Note: Treat the tornadoes that struck in Texas as a simple random sample of all tornadoes that struck Texas since 1950 using a 0.05 level of significance. The summarized data show that 82 of 168 tornadoes in Texas were F0 during 2017. State the null and alternative hypotheses. Họ: H1: (Type integers or decimals. Do not round.) Because the data is treated as a simple random sample; npo(1- Po) V10: and the sample size n is less than 5% of the population size, we may the normal model to test the hypothesis. The P-value is. (Type integers or decimals rounded to four decimal places as needed.) If we obtained 100 independent random samples of size 168 from the state of Texas, we would expect (Type integers or decimals rounded to three decimal places as…

You compute a two-sample z statistic and it comes out to equal 1.6. What is the p-value if you are doing a two-tailed test? Enter a value between 0 and 100 corresponding to the percentage, e.g. if your p-value equals 2.4%, enter 2.4. Any correctly rounded version will receive full credit.

A software company is interested in improving customer satisfaction rate from the 55% currently claimed.  The company sponsored a survey of 247 customers and found that 146 customers were satisfied. What is the test statistic z?

The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.