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...

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...

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

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...

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...

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

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...

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

Have to use z-score table.

Use standard normal table

Use normal distribution table.

I need all work possible.

of the mean that is, the area between μ − σ and μ + σ. Round to four decimal places

The claim is that the proportion of peas with yellow pods is equal to 0.25 (or 25%). The sample statistics from one experiment include 400 peas with 82 of them having yellow pods. Find the value of...

I don’t understand this and need help please.

If the class is like this 10 but less than 20 20 but less than 30 30 but less than 40 what are the class boundaries

i need help with these word problems i just do not get them

Cans of regular soda have volumes with a mean of 13.46 oz and a standard deviation of 0.12 oz. Is it unusual for a can to contain 13.82 oz of soda? Minimum "usual" value equals...

How would I come to determine this?

74 5 66 6 81 8 52 11 73 12 62 15 52 16 45 17 62 18 46 18 60 19 46 20 38 20 y=31.934+(-0.304)x An ecologist uses the line, based on 13 colonies,...