Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births. Click the icon to view the data table. The mean is = girl(s). (Round to one decimal place as needed.) The standard deviation is = girl(s). (Round to one decimal place as needed.) In the week before and the week after a holiday, there were 10,000 total deaths, and 4927 of them occurred in the week before the holiday. a. Construct a 95% confidence interval estimate of the proportion of deaths in the week before the holiday to the total deaths in the week before and the week after the holiday. b. Based on the result, does there appear to be any indication that people can temporarily postpone their death to survive the holiday? a. Use the given information to find the number of degrees of freedom, the critical values has been selected from a population with a normal distribution. Nicotine in menthol cigarettes 95% confidence; n = 23, s = 0.27 mg. Click the icon to view the table of Chi-Square critical values. and X, and the confidence interval estimate of . It is reasonable to assume that a simple random sample df= (Type a whole number.) = (Round to three decimal places as needed.) = (Round to three decimal places as needed.) The confidence interval estimate of is mg con to view the data table. = girl deviation Table of numbers of girls and probabilities Number of Girls x P(x) 012345678 0.006 0.034 0.101 0.221 0.267 0.228 0.108 0.032 0.003 Print Done - X The accompanying table describes the random variable x, the numbers of adults in groups of five who reported sleepwalking. Complete parts (a) through (d) below. Click the icon to view the table. a. Find the probability of getting exactly 4 sleepwalkers among 5 adults. (Type an integer or a decimal. Do not round.) b. Find the probability of getting 4 or more sleepwalkers among 5 adults. (Type an integer or a decimal. Do not round.) c. Which probability is relevant for determining whether 4 is a significantly high number of sleepwalkers among 5 adults: the result from part (a) or part (b)? A. Since the probability of getting 4 or more sleepwalkers is the probability of the given or more extreme result, the result from part (b) is the relevant probability. B. Since the probability of getting fewer than 4 sleepwalkers is the complement of the result from part (b), this is the relevant probability. OC. Since the probability of getting 4 sleepwalkers is the result from part (a), this is the relevant probability. OD. Since the probability of getting 5 sleepwalkers is less likely than getting 4 sleepwalkers, the result from part (a) is the relevant probability. d. Is 4 a significantly high number of 4 sleepwalkers among 5 adults? Why or why not? Use 0.05 as the threshold for a significant event. OA. No, since the appropriate probability is greater than 0.05, it is not a significantly high number. OB. Yes, since the appropriate probability is greater than 0.05, it is a significantly high number. C. No, since the appropriate probability is less than 0.05, it is not a significantly high number. OD. Yes, since the appropriate probability is less than 0.05, it is a significantly high number.