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Homework: 10.5 Which Method (Mixed Practice) Save Score: 0 of 1 pt 4 of 5 (1 complete) HW Score: 11.43%, 0.57 of 5 pt Instructor-created question i Question Help According to a recent article about individuals who have credit cards, the mean number of cards per person with credit cards is 4. To test this result a random survey of 60 individuals who have credit cards was conducted. The survey only includes the number of credit cards per participant. The results of the survey are attached below. (a) What is the variable of interest in this study? Is it qualitative or quantitative? (b) Do the results of the survey imply that the mean number of cards per individual is less than 4? Use the a = 0.05 level of significance. Click the icon to view the data from the survey. (a) What is the variable of interest in this study? Is it qualitative or quantitative? The variable of interest is It is a variable. (b) Do the results of the survey imply that the mean number of cards per individual is less than 47 Use the a = 0.05 level of significance. State the null and alternative hypotheses. Ho: Hy : (Type integers or decimals.) Determine the t-statistic. to = (Round to two decimal places as needed.) Make a conclusion regarding the hypothesis. The t-statistic is than the critical value. the null hypothesis. There sufficient evidence to claim that the mean number of credit cards isQuestion Help In 1945, an organization asked 1509 randomly sampled American citizens, "Do you think we can develop a way to protect ourselves from atomic bombs in case others tried to use them against us?" with 814 responding yes. Did a majority of the citizens feel the country could develop a way to protect itself from atomic bombs in 19457 Use the a = 0.05 level of significance. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). What are the null and alternative hypotheses? Ho: versus H, : (Type integers or decimals. Do not round.)