An SRS of n = 43 was taken from pcople in the gym. In the sample the average time spent excrcising eah day was -2 hours. The standand deviation d all people that go to the n the poputation of all people that go to the gym that time. gym is knoun to bc o = .6 hours. Assume that. %3D spont exercising tollows a nomal distributiowith mcan What is the Standard deviation of the sampling the distribution?

If a sore of normal distribution is 2.5, mean of distribution is 45 and standard deviation of normal distribution is 3 then the value of x for normal distribution is ________ A.) 7.5 B.) 47.5 C.) 37.5 D.) 67.5

I need the answer for B and C please

Assume that a randomly selected subject is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find the probability of a bone density test score greater than 0. Sketch the region. Choose the correct graph below. O A. OB. C. ntents a Library The probability is (Round to four decimal places as needed.) Enter your answer in the answer box and then click Check Answer All parts showing Clear All Check Anwr

1:37 PM Wed Apr 21 * 72% 88 Q Stats Exam •.. Untitled Notebook (1) Stats Exam 37. The manager of Green Valley medical center claims that the median number of patients seen by doctors who work at the center is 85. To test this claim, 20 days are randomly selected and the number of patients seen is recorded as shown. At a=0.1, test the claim. (Use sign test) 86 82 90 88 85 85 94 93 69 61 89 90 91 94 78 85 71 77 69 77

Suppose the lengths of human pregnancies are normally distributed with µ = 266 days and o= 16 days. Complete parts (a) and (b) below. (Type integers or decimals.) A. The proportion of human pregnancies that last less than B. The proportion of human pregnancies that last more than days is days is Provide a second interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) O A. The probability that a randomly selected human pregnancy lasts less than B. The probability that a randomly selected human pregnancy lasts more than (b) The figure to the right represents the normal curve with µ = 266 days and o = 16 days. The area between x = 280 and x = 295 is 0.1558. Provide two interpretations of this area. days is days is Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or…

Said that trey watched the hornd (0 EO a SurNEN SE G00 adults 240 Cup final cn T.V. USing trese e Statistics, of error, E, Con fidlence loterval for the popation Caiculate Sample the margin for a 90% Of Gll Stu deots that watched the Warld cup final co t.v.