Assume that females have pulse rates that are normally distributed with a mean of u = 72.0 beats per minute and a standard deviation of o= 12.5 beats per minute. Complete parts (a) through (c) below. a. If 1 adult female is randomly selected, find the probability that her pulse rate is less than 75 beats per minute. The probability is (Round to four decimal places as needed.) b. If 4 adult females are randomly selected, find the probability that they have pulse rates with a mean less than 75 beats per minute. The probability is (Round to four decimal places as needed.) c. Why can the normal distribution be used in part (b), even though the sample size does not exceed 30? O A. Since the mean pulse rate exceeds 30, the distribution of sample means is a normal distribution for any sample size. O B. Since the distribution is of individuals, not sample means, the distribution is a normal distribution for any sample size. O C. Since the original population has a normal distribution, the distribution of sample means is a normal distribution for any sample size. O D. Since the distribution is of sample means, not individuals, the distribution is a normal distribution for any sample size.

Compute the standard deviation of each of the two data sets A and B below. Then subtract the Standard Deviation of the data set A from the Standard Deviation of data set B.  State your result as a decimal value with one digit after the decimal point (e.g. 3.0). Data set A:     1,     2,    3,     4,      5,      6 Data set B:     21,     22,     23,      24,     25,     26

Use the data in the following table, which lists drive-thru order accuracy at popular fast food chains. Assume that orders are randomly selected from those included in the table. Drive-thru Restaurant Order Accurate 328 276 235 140 Order Not Accurate 33 52 40 15 If one order is selected, find the probability of getting an order that is not accurate. The probability of getting an order that is not accurate is (Round to three decimal places as needed.) Enter your answer in the answer box. Next can 1:13 PM 7/25/2021 Acce today hp APPROVAL COD 137-2190-77 TOTAL CRE UP TO ACCE 08 home end ins prt sc delete t9 144 f8 f6 f5 f3 米 ? E backspace unu lock esc & 23 3 4 1 R T Y Q tab enter VIS KL H. A pause pcery ase caps lock 00 %24

Assume that thermometer readings are normally distributed with a mean of 0degrees°C and a standard deviation of 1.00degrees°C. A thermometer is randomly selected and tested. (The given values are in Celsius​ degrees.)   Between -1.47and 1.76