PS9 - Question 1 1 points Save In the population, the...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Question 1 1 points Save In the population, the scores of students on the ACT college entrance exam had mean μ = 22 and standard deviation σ = 6. The distribution of scores is roughly normal. A SRS of 80 students who took the exam is taken. Round the standard deviation of the sample mean score x_bar to four decimal places. Using that rounded number, what is probability that the mean score x_bar of these students is 22.5 or higher (rounded to four decimal places )? (Remember to express your answer as a proportion.) Question 2 1 points Save In the population, the scores of students on the SAT college entrance exam had mean μ = 1200 and standard deviation σ = 80. The distribution of scores is roughly normal. A SRS of 60 students who took the exam is taken. Round the standard deviation of the sample mean score x_bar to four decimal places. Using that rounded number, what is probability that the mean score x_bar of these students is between 1190 and 1210 (rounded to four decimal places
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

PS9 - Question 1 1 points Save In the population, the...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online