help me pleaseeeeeeeeee . so hard1) If we wish to determine whether there is evidence that the proportion of items of interest is the same in group 1as in group 2. the appropriate test to use isA) the X2 test.B) the Z test.C) Both A and B.D) Neither A nor B.2) General Mills is considering offering a new type of yogurt. To gauge interest, they are performing taste tests atdifferent locations around the country. Based on the results of these samples, they will decide whether or not tomarket the new yogurt. This is an example of usingA) qualitative data.B) inferential statistics.C) descriptive statistics.D) secondary data.3) The : test for the difference between the means of 2 independent populations assumes that the respectiveA) sample variances are equal.C) sample sizes are equal.B) populations are approximately normal.D) All of the above.4) Sue Anne owns a medium-sized business. Use the probability distribution below, where X describes thenumber of employees who call in sick on a given day.Number of Employees Sick | 0P(X = x)2 30.05 0.35 0.25 0.2 0.15What is the expected value of the number of employees calling in sick on any given day? Round the answer totwo decimal places.A) 2.00B) 1.5C) 2.05D) 2.505) In its standardized form, the normal distributionA) has an area equal to 0.5.B) has a mean of 0 and a standard deviation of 1.C) has a mean of 1 and a variance of 0.D) cannot be used to approximate discrete probability distributions.ISETONInterpret the given confidence interval.6) Suppose the proportion of sophomores at a particular college who purchased used textbooks in the past year iswoo’SPs and the proportion of freshmen at the college who purchased used textbooks in the past year is pf. A studyfound a 98% confidence interval for Ps – pf is (0.238, 0.424). Give an interpretation of this confidence interval.A) We are 98% confident that sophomores at this college bought between 23.8% and 42.4% more usedPARTtextbooks than freshmen.PART 2TOTALB) We know that 98% of sophomores bought between 23.8% and 42.4% more used textbooks than freshmenat this college.TEST RESULTSC) We know that 98% of all random samples done on the population will show that the proportion ofsophomores who bought used textbooks is between 23.8% and 42.4% higher than the proportion offreshmen who bought used textbooks.CEaD) We are 98% confident that at this college the proportion of sophomores who bought used textbooks isCEDbetween 23.8% and 42.4% higher than the proportion of freshmen who bought used textbooks.CESS CEP-100Guaranteed
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