Question

Can someone please help me use technology to determine P(p̂ ≤ 0.081).

The answer is 0.244 but I do not know how to input it in a calculator.

Answer 1

Can you post the rest of the info ?

Answer 2

Here's another question but the same problem that needs to be solved

Answer 3

The letter​ "t" makes up an estimated 15​% of a certain language. Assume this is still correct. A random sample of 1500 letters is taken from a randomly​ selected, large book and the​ t's are counted. Find the approximate probability that the random sample of 1500 letters will contain 13.5% or fewer​ t's.

Answer 4

First, I found the standard error which is 0.009 from the formula: square root P(1-p)/n

Answer 5

But I do not know how to compute the probability for: P(p̂≤0.135) using technology. Could you please help me?

Answer 6

The answer is supposed to be 0.048 but I do not know how to work out the probability.

Answer 7

This site can do that
http://davidmlane.com/hyperstat/z_table.html

put in 0.15 for the mean
0.009 for SD

select "less than" and put in 0.135

Answer 8

Thank you so much! How did you find the mean?

Answer 9

it should look like this

Answer 10

The letter​ "t" makes up an estimated 15​% of a certain language.--> 0.15 is the mean

Answer 11

Oh I see! Thank you again!