Diagrams of the normal distribution are almost mandatory 3. 40% of the population has type A...

Diagrams of the normal distribution are almost mandatory

3. 40% of the population has type A blood.

If 8 people are selected at random, what is the probability that less than six of them have type A blood.

If 80 donors come to give blood one day, what is the probability that less than 60 of them have Type A blood (using the normal approximation)? Explain why this is higher or lower than the answer in part (a).

If 10 people give blood one day, what is the probability that more than 6 of them are Type A?

If 100 people come to give blood, what is the probability that more than 60 the donors is of Type A? Explain why this answer is higher or lower than the answer in part (c).

Expert Solution

milcah answered 3 months ago

Diagrams of the normal distribution are almost mandatory Suppose that battery lives are normally distributed with...

Diagrams of the normal distribution are almost mandatory Suppose that battery lives are normally distributed with a mean of 12.85 hours and a standard deviation of 1.93 hours. What is the minimum sample size that would be required so that the probability of obtaining a sample mean above 13.5 hours is less than 1%?

Diagrams of the normal distribution are almost mandatory A health insurance company charges policyholders a $2450...

Diagrams of the normal distribution are almost mandatory A health insurance company charges policyholders a $2450 annual premium for health insurance for hospitalization. The company estimates that each time a patient is hospitalized costs the company $3600. Furthermore, they have estimated that 85% of patients will not be hospitalized, 10% will be hospitalized once a year, and no one will be hospitalized more than twice. (a) Find the insurance company’s expected profit per policyholder. (b) What is the expected profit...

Draw a diagram of the normal distribution for all questions being asked. 40% of the population...

Draw a diagram of the normal distribution for all questions being asked. 40% of the population has type A blood. If 8 people are selected at random, what is the probability that four or less of them have type A blood. If 80 donors come to give blood one day, what is the probability that 40 or less of them have Type A blood (using the normal approximation)? Explain why this is higher or lower than the answer in part...

A population parameter has a normal distribution and has a mean of 45 and variance of...

A population parameter has a normal distribution and has a mean of 45 and variance of 15. From this population a sample is selected with a size of 19 and the variance of the sample is 17. Does this sample support the population variance? Evaluate.

A population has a normal distribution with a mean of 51.4 and a standard deviation of...

A population has a normal distribution with a mean of 51.4 and a standard deviation of 8.4. Assuming n/N is less than or equal to 0.05, the probability, rounded to four decimal places, that the sample mean of a sample size of 18 elements selected from this population will be more than 51.15 is?

A population has a normal distribution with a mean of 51.5 and a standard deviation of...

A population has a normal distribution with a mean of 51.5 and a standard deviation of 9.6. Assuming , the probability, rounded to four decimal places, that the sample mean of a sample of size 23 elements selected from this populations will be more than 51.15 is:

A) If a normal distribution has a mean µ = 40 and a standard deviation σ...

A) If a normal distribution has a mean µ = 40 and a standard deviation σ = 2, what value of x would you expect to find 2 standard deviations below the mean B) If a normal distribution has a mean µ = 70 and a variance σ2 = 16, what value of x would you expect to find 2.5 standard deviations above the mean? C)If a sample yields a mean xmean = 44 and we know that the sum...

A population of values has a normal distribution with μ = 141.1 and σ = 21.9...

A population of values has a normal distribution with μ = 141.1 and σ = 21.9 . You intend to draw a random sample of size n = 144 . Find P35, which is the score separating the bottom 35% scores from the top 65% scores. P35 (for single values) = Find P35, which is the mean separating the bottom 35% means from the top 65% means. P35 (for sample means) = Enter your answers as numbers accurate to 1...

A population of values has a normal distribution with μ = 118.4 μ = 118.4 and...

A population of values has a normal distribution with μ = 118.4 μ = 118.4 and σ = 87.7 σ = 87.7 . You intend to draw a random sample of size n = 24 n = 24 . Find the probability that a single randomly selected value is less than 62.9. P(X < 62.9) = ______ Find the probability that a sample of size n = 24 n = 24 is randomly selected with a mean less than 62.9....

A population of values has a normal distribution with μ = 231.5 and σ = 53.2...

A population of values has a normal distribution with μ = 231.5 and σ = 53.2 . If a random sample of size n = 19 is selected , Find the probability that a single randomly selected value is greater than 241.3. Round your answer to four decimals. P(X > 241.3) = Find the probability that a sample of size n=19n=19 is randomly selected with a mean greater than 241.3. Round your answer to four decimals. P(M > 241.3) =

Question