Help A random sample of n measurements was selected from a population with unknown mean and standard deviation o = 30 for each of the situations in parts a through
d. Calculate a 95% confidence interval for foreach of these situations.
a. n=75, X = 25
b. n=250, x= 116
c. n = 90, X = 16
d. n=90, = 5.21
e. Is the assumption that the underlying population of measurements is normally distributed necessary to ensure the validity of the confidence intervals in parts a
through d? Explain.
a. (1.)
(Round to two decimal places as needed.)

square root of 36/6 = 2.449489743

square root of 16/6 = 1.632993162

square root of 6 = 2.449489743

the answer is square root of 16/6 because the square root of 36/6 is the same answer as square root of 6 = 2.449489743

14.29%

step-by-step explanation:

the number of possible outcomes that do not show a 1 on the first spinner and show the number 4 on the second spinner is 2.

spinner 1 spinner 2

1                     1

1                     2

1                     3

1                     4

2                   1

2                   2

2                   3

2                   4   = not 1, and 4

3                   1

3                   2

3                   3

3                   4 = not 1, and 4

only 2 outcomes have passed the given condition.

step-by-step explanation: