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- Find kurtosis by using ungroup data given in the picture using quartile deviation, make sure to arrange data before solving question.J 2 June 2011 Pew Research Center study reported that "On average, Facebook users receive more messages than they send. In the month of our analysis, users received an average of nearly 12 private messages, and sent nine." Q. What seems wrong with this statement? How do you think it should be corrected?Calculate Pearson’s coefficient of skewness. Hence, describe the shape of thedistribution of the waiting time for counter A and B.
- Of the total 161 patients with diabetes ketoacidosis (DKA), 13 had DKA before and after the pump therapy, 128 did not have DKA either before or after, 7 had DKA before but not after, and 13 did not have DKA before but after.a) Draw a 2 by 2 table b) Is there any evidence of a difference in the effect? c) Write a brief summary of what the result show.What is your conclusion using a one sided z test if you assume α=0.01 and test the hypothesis that the proportion of colic is less among infants of mothers who don’t smoke than among the infants of mothers who smoke?Show that βˆ0 is an unbiased estimator of β0. (Hint: Use the fact that βˆ1 is unbiased, which is shown in Appendix 4.3.
- Test the hypothesis that the population GPA of all students in MAT125 is not equal to 2.95. Test at the 0.05 level of significanceA medical researcher says that less than 74%of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 600adults in that country, 71% think that healthy children should be required to be vaccinated. At α=0.01, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below. (a) Identify the claim and state H0 andHa. Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) Fill the percentage on the correct answer A. % of adults in the country think that healthy children should be required to be vaccinated. B. Less than %of adults in the country think that healthy children should be required to be vaccinated. C. The percentage of adults in the country who think that healthy children should be required to be vaccinated is not %. D. More than…Explain how does the null hypothesis test using a t ratio.