Suppose the mean IQ score of people in a certain country is 101. Suppose the director of a college obtains a simple random sample of 43 students from that country and finds the mean IQ is 105.3 with a standard deviation of 13.4. Complete parts (a) through (d) below. (a) Consider the hypotheses Ho: H = 101 versus H,: p>101. Explain what the director is testing. Perform the test at the a = 0.10 level of significance. Write a conclusion for the test. Explain what the director is testing. Choose the correct answer below. O A. The director is testing if the sample provided sufficient evidence that the population mean 1Q score is actually not equal to 101. O B. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually not greater than 101. O C. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually equal to 101. D. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually greater than 101. Find the test statistic for this hypothesis test. (Round to two decimal places as needed.)

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A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.