ECount CCount 17 16 56 45 52 42 32 30 1 0

ECount CCount 17 16 56 45 52 42 32 30 1 0

Assume the population mean is µ=12 and standard deviation 2. By Central Limit Theorem the random sample of 121 measurements from this population would have what kind of distribution?

A monkey is happy if it eats 3 types of fruit. There are 20 pears, 30 bananas, 40 peaches and 50 oranges. How do you distribute the fruit to make the most number of monkeys happy? What is that number...

What is the probability that the temperature during summer is a) above 70°F? (b). between 70°Fand 90°F? (c). below 85°F? (d ). What is the average temperature during summer ? (e)...

Suppose birth weight is normally distributed with a mean of 7.5 pounds and a standard deviation of 1 pound. What is the probability that out of 5 randomly selected babies, exactly 4 of them are heavier...

Lifetimes of electronic components can often be modeled by an exponential model. Suppose quality control engineers want to model the lifetime of a hard drive to have a mean lifetime of 2 years. a)...

1. Find the 5th percentile of the standard normal distribution 2. Find the 66th percentile for a normal distribution with mean -7, standard deviation 6 3. On a test the scores are...

1. Find the 5th percentile of the standard normal distribution 2. Find the 66th percentile for a normal distribution with mean -7, standard deviation 6 3. On a test the...

Clinical trials have found 35% of patients are likely to suffer side effects from a drug which treats migraine. In a clinic, it is prescribed to 15 patients a month. -> find the mean...

I solved this question, however, I'm not sure about the result, so I'd like to see how you solved it. Thank you in advance! Linda takes part in a spelling competition in which first...

(17x−1)3

The lifetime of a new television has an exponential distribution with an average lifetime of 7.5 years. As a sales incentive the company offers guaranteed free replacement for any tv that fails within...

A company’s manufacturing process uses 500 gallons of water at a time, a scrubbing machine then removes most of the chemical pollutant before pumping the water into a lake. Legally the treated water...

Question/Problem: Data Set 1 in Appendix B lists the white blood cell counts (1000 cells/µL) of 40 randomly selected women. The mean of those 40 values is 7.15 and the standard deviation...

Question/Problem: Identify the distribution (normal, Student t, chi-square) that applies to each of the following situations. (If none of the three distributions is appropriate, then so state...

Find P(Z>1)

I have been given values for 10%, 50% and 90% of a distribution. From these numbers, how can I compute the mean and standard deviation? I'll give an example....Temperature distribution 10th...

A researcher has collected a large sample of IQ scores from his friends and relatives. He claims that because his sample is large and the distribution of his sample scores is very close to the bell...

According to the Nielsen Company, 30% of U.S. households have a digital video recorder. Suppose a random sample of 15 households was taken. The researcher is interested in computing probabilities...

Length of a human pregnancy is 9 months. Mean is 266 days and standard deviation 16 days. What percentage of pregnancies last less than 250 days?

Hamsa F.

Proficient, flexible, and effective English and Test Prep Tutor

Kearny, NJ

Edward B.

STAT/MATH/Actuarial Science/MBA/Econ/Fin. - Ivy League Exp & Prof

New York, NY

4.9
(270 ratings)