Answer:
Step-by-step explanation:
ans is in the attachment.
5cm,7cm,and 10cm? im no professional but might wanna double check first
Answer:
An equation or an inequality that contains at least one variable is called an open sentence. When you substitute a number for the variable in an open sentence, the resulting statement is either true or false. If the statement is true, the number is a solution to the equation or inequality.
We want to find the sample size n such that
Pr[|µ - 101| < 5] = 0.98
where µ is ... some mean. It can be the mean for either the true population or the sample. It's unclear which is which from the given info, but that's not actually important.
In the inequality, divide both sides by the standard error, σ/√n = 16/√n :
Pr[|µ - 101|/(16/√n) < 5/(16/√n)] = 0.98
Use a lookup table to find the z-score corresponding to 0.98 :
⇒ 5/(16/√n) ≈ 2.05375
Solve for n :
⇒ n ≈ 43.1911 ≈ 44
