onsider the following situation. a two-tailed test at the ? = 0.1 Find the appropriate rejection regions. (Round your answers to two decimal places. If the test is one-tailed, enter NONE for the unused region.)   z > z <

D Question 4 150 college students were asked to indicate their favorite caffeinated beverage of choice, coffee, tea, soda, or energy drinks. The data appear in the table below. Perform a chi-square test for goodness of fit to determine if there is a preference for a particular type of drink. Use the .05 level of significance. Coffee 42 Tea 18 Soda 27 Energy Drink 63 When calculating chi-square what is the contribution to chi-square from coffee?

In the US, 46.2% of all people have type O blood, 39.1% have type A blood, 10.4% have type B blood and 4.3% have type AB blood. A researcher wants to see if the distribution of blood type is different for millionaires. The table below shows the results of a random sample of 3116 millionaires. What can be concluded at the a = 0.01 significance level? a. Complete the table by filling in the expected frequencies. Round to the nearest whole number: Frequencies of Blood Type Outcome Frequency Expected Frequency 1434 A 1224 В 310 AB 148 b. What is the correct statistical test to use? Select an answer V c. What are the null and alternative hypotheses? Но: O Blood type and income are independent. O The distribution of blood type for millionaires is not the same as it is for Americans in general. O The distribution of blood type for millionaires is the same as it is for Americans in general. O Blood type and income are dependent.

Make a frequency distribution for the data. X f 1 2 2 20 3 21 4 15 The sample mean is x = (Round to one decimal place as needed.)