Suppose that 20% of American workers aged 60 to 65 years plan to retire in the next 5 years. Suppose we obtain a simple random sample of 1600 workers aged 60 to 65. What is the probability that at least 23% people in the sample plan to retire in the next 5 years?

0.0013

Step-by-step explanation:

We have p = 20% = 0.20

Sample n = 1600

We are to find probability of at least 23% retiring in 5 years

P(p hat >= 0.23)

We find the z score

Z = p hat - p/√p(1-p/n

= 0.23-0.20/√0.20(1-0.20/1600

= 0.03/0.01= 3

P(z>=3)

1-p(z<3)

1-0.9987

= 0.0013

So we conclude that this is the probability at least 23% people in the sample would retire in the next 5 years

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.

b. ol

step-by-step explanation:

i got the answer right on edg.

congruent: (geometry) (of figures) identical in form; coinciding exactly when superimposed.