Students in a statistics class at Penn State were asked, “About how many minutes do you typically exercise in a week?” Responses from the women in the class were as follows: 60,...

Students in a statistics class at Penn State were asked, “About how many minutes do you typically exercise in a week?” Responses from the women in the class were as follows: 60,...

a) A survey of park showed an average expenditure of Rs. 10.30. If for 20 girls the average expenditure was Rs.9.70 and Rs. 11.1 for the boys. Find the number of boys. b) A computer calculated...

Assume you have a room of 10 Facebook users and the average number of friends is 130. If one person in this room adds 50 new Facebook friends (none of whom are in the room), then what would be the...

The annual returns on one type of investment bond has a mean of 10.73% and a standard deviation of 6.12%. If the distribution is unimodal and symmetric with no outliers, what can we say about the...

A person Invested Rs. 20,000 at 6% Rs. 30,000 at 7% and Rs. 1,50,000 at 8%. What is the: (a) Average return on these investment. (b) Average investment. (c) Average Interest rate.

The results of an examination are found to be normally distributed with a standard deviation of 15.0. If a student is selected at random, the probability is 0.0485 that his mark will exceed 85. The...

the average gpa is 4.0 with standard deviation of .2. What percent of admitted students had a gpa lower than 3.5

You draw 6 random numbers 500 times. The numbers are from 1 to 48. Nine out of ten of the numbers drawn most in that sample are in the top third (33 to 48). The people doing the draw benefit...

what is the the 95th percentile of a population with mean 235 and standard deviation 25

According to a study by the National Center for Health Statistics, the BMI of American men is normally distributed with a mean of 26.6 kg/m2 and a standard deviation of 5.2 kg/m2 The...

A student takes a ten-question true-false quiz, but did not study and randomly guesses each answer. Find the probability that the student passes the quiz with a grade of at least 40% of the questions...

The results of a study showed that heterosexual women, during ovulation, were significantly better at correctly identifying the marriage status of a man from a photograph of his face than women who...

These are the set of numbers: 0 2000 6 2000 4000 13 4000 6000 17 6000 8000 10 8000 10000 4 and the mean is 4720. Please show me how you get 4720.

two clubs on two consecutive draws without replacement from a standard deck of cards you win $531. Otherwise you pay me $32. if you played 524 times how much would you expect to win or lose?

The time to complete a standardized exam is approximately normal distributed with a mean of 100 minutes and a standard deviation of 15 minutes. The time, to the nearest minute, that should be given...

PLEASE GIVE THE PERCENT OF THE Z-SCORE. ROUND TO TWO DECIMAL PLACES.

Light vehicles sold in a country must emit an average of no more than 0.11 grams per mile (g/mi) of nitrogen oxides (NOX) after 50,000 or fewer miles of driving. NOX emissions after 50,000 or fewer...

Have to use z-score table.

Use standard normal table

Use normal distribution table.