17. IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain person has an IQ of 131, what percentage of the population has a lower IQ? 16. IQ scores...

17. IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain person has an IQ of 131, what percentage of the population has a lower IQ? 16. IQ scores...

Spreadsheet 9k

calculates the standard deviation using MS Excel

Assume that the salaries of elementary teachers in the United States are approximately normally distributed with a mean of $32,000 and a standard deviation of $6,000. What is the approximate percentage...

41 dogs were in a shelter for 10 months, with a standard deviation of 4.6 months before finding a home. find a 95% confidence interval to estimate the number of months the dogs were in a shelter....

Question 6 Which of the following is NOT TRUE concerning the graphic depiction ("the curve") of a distribution for means? Question...

The average adult Indian Rhino weighs 4600 pounds with a standard deviation of 500 pounds. a) What percent of Indian Rhinos are more than 4000 pounds? b) Rhinos in the 80th percentile are...

A random sample of 40 students that took an online SAT course had an average score of 1870. Suppose we know the standard deviation of the underlying population to be 100. Find the mean and standard...

We have learned that 99.73% of the parts from a process in control will fall within 6 standard deviations of the mean or average (3 above the mean and 3 below the mean). This particular width, 6 standard...

whats the standard deviation of the data set below, Rounding your answer to three decimal places? 2, 4, 6, 6, 8, 10, 11, 12, 14, 16, 17, 18, 18, 18

A livestock company reports that the mean weight of a group of young steers is 1086 pounds with a standard deviation of 55 pounds. Based on the model N(1086,55) for the weights of steers, what percent...

The mean length of Beethoven’s nine symphonies is 37 minutes; the standard deviation is 12 minutes. The data values are the following minutes: 23, 30, 47, 35, 30, 40, 35, 22, and 65. Determine...

How much time

Total amount of time (x, in minutes) spent commuting by the entire 240 residents of a housing area was recorded. Given that total x = 10,980 and total ( x - µ )² = 23,191. Compute the...

Urgent. It's for my exams. I really appreciate it if anyone help me with this question.

The ages of members of an online gaming group are normally distributed with a mean of 23 years and a standard deviation of 4 years. There are 300 members in the group.

The weights of members of a baseball league are normally distributed with a mean of 176 pounds and a standard deviation of 11.4 pounds. Consider a league membership of 120 members.

The ages of people in a movie theater are normally distributed with a mean of 32 years and a standard deviation of 6.2 years. (round to nearest tenth)

A normal distribution has a mean of 102 and a standard deviation of 2.9.

new-car lease fees: 169, 169, 199,239, 239,249

People with z-scores above 2.5 on an IQ test are sometimes classified as geniuses.

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