Mathematics, 12.08.2020 07:01 aaburto1515

Information from the American Institute of Insurance indicates the mean amount of life insurance per household in the United States is $115,000. This distribution follows the normal distribution with a standard deviation of $37,000. A) If we select a random sample of 48 households, what is the standard error of the mean? (Round your answer to the nearest whole number.)
Standard error of the mean
(b) What is the expected shape of the distribution of the sample mean?
(c) What is the likelihood of selecting a sample with a mean of at least $120,000? (Round z value to 2 decimal places and final answer to 4 decimal places.)
(d) What is the likelihood of selecting a sample with a mean of more than $106,000? (Round z value to 2 decimal places and final answer to 4 decimal places.)
(e) Find the likelihood of selecting a sample with a mean of more than $106,000 but less than $120,000.(Round z value to 2 decimal places and final answer to 4 decimal places.)

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 13:30

Find the x coordinate of the point.

Answers: 1

Answer

Mathematics, 21.06.2019 14:30

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

Answers: 3

Answer

Mathematics, 21.06.2019 19:50

Raj encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, he multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. the matrix representing the encoded text is . what is the secret phrase? determine the location of spaces after you decode the text. yummy is the corn the tomato is red the corn is yummy red is the tomato

Answers: 2

Answer

Mathematics, 21.06.2019 20:30

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

Answers: 2

Answer

You know the right answer?

Information from the American Institute of Insurance indicates the mean amount of life insurance per...

Questions

Mathematics, 30.11.2021 06:00

Se acuerda a pagar un préstamo con depósitos de S/. 800 a comienzos de cada trimestre, durante 8 años. ¿Calcule el valor de la deuda con una tasa nomi...