The probability that a randomly chosen student in a statistics class submits his/her homework on time is 0.12.  There is 35 student in the class. Each student does his/her homework independently. What is the standard deviation of X, where X is the number of students who submit the homework on time?

Assume that adults have IQ scores that are normally distributed with a mean of u= 100 and a standard deviation o= 15. Find the probability that a randomly selected adult has an IQ less than 130. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ less than 130 is (Type an integer or decimal rounded to four decimal places as needed.)

Assume that women's weights are normally distributed with a mean given by mean=143 lb and a standard deviation given by 29 lb. If 3 women are randomly selected, find the probability that they have a mean weight below 113 If 85 women are randomly selected, find the probability that they have a mean weight below 113

Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a standard deviation o = 20. Find the probability that a randomly selected adult has an IQ between 83 and 117. Click to view page 1 of the table Click to view page 2 of the table. The probability that a randomly selected adult has an IQ between 83 and 117 is (Type an integer or decimal rounded to four decimal places as needed.)

Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a standard deviation o=15. Find the probability that a randomly selected adult has an IQ between 82 and 118. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ between 82 and 118 is (Type an integer or decimal rounded to four decimal places as needed.)

Solve the problem.Assume that mountain lions' weights are normally distributed with a mean of 62.6 kilograms and a standard deviation of 2.6 kilograms. If 70 mountain lions are randomly selected, find the probability that they have a mean weight between 61.9 kilograms and 62.8 pounds.

Assume that adults have IQ scores that are normally distributed with a mean of u= 105 and a standard deviation o = 20. Find the probability that a randomly selected adult has an IQ between 91 and 119. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ between 91 and 119 is (Type an integer or decimal rounded to four decimal places as needed.)

The IQ of highschool seniors is normally distributed with a mean of 100 and a standard deviation of 15. What is the probability that a sample of 15 students will have a sample mean less than 99.  Give your answer to three decimal places and write as a proportion (i.e. between 0 and 1).

Scores on the SAT test have a mean of 1518 and a standard deviation of 325. If 100 students are randomly chosen and the mean of their SAT scores is calculated, find the probability that the sample mean is less than 1460.

Assume that adults have IQ scores that are normally distributed with a mean of u = 100 and a standard deviation o = 15. Find the probability that a randomly selected adult has an IQ between 84 and 116. Click to view page 1 of the table. Click to view page 2 of the table. The probability that a randomly selected adult has an IQ between 84 and 116 is (Type an integer or decimal rounded to four decimal places as needed.)