subject
Mathematics, 11.06.2021 17:30 ybhques7

The scores on a certain test are normally distributed with a mean score of 65 and a standard deviation of 2. What is the probability that a sample of 90 students will have a mean score of at least 65.2108? Group of answer choices

a) 0.3174

b) 0.3413

c) 0.8413

d) 0.1587

ansver
Answers: 2

Another question on Mathematics

question
Mathematics, 20.06.2019 18:02
You paid $7.70 to the mail package that weighed 5.5 lb. right and solve any quetion to find the cost per pound ? ?
Answers: 1
question
Mathematics, 21.06.2019 18:00
The estimated number of people to attend the last bengals game of the season was 2000. the actual number of fans attending was 1200. by what percent did the estimate differ from the actual?
Answers: 3
question
Mathematics, 21.06.2019 20:00
He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%
Answers: 3
question
Mathematics, 22.06.2019 00:10
Of f(x) is byof f(x)=-3|x| x-.f(x)? a )f(x)=3|x| b) f(x)=|x+3| c) f(x)= -3|x| d) f(x)= -|x+3|
Answers: 2
You know the right answer?
The scores on a certain test are normally distributed with a mean score of 65 and a standard deviati...
Questions
Questions on the website: 13722360