1) What is the population standard deviation of the given data: 12, 13, 17, 10, 8,...

1) What is the population standard deviation of the given data: 12, 13, 17, 10, 8, 6 to the nearest tenth

2) We roll a die 54 times. How many 6s should we expect?

3) We want to test a new drug, and we want to ensure that all age groups are represented. To do this, we split up the general population into age groups, and then select randomly within each group. State what type of sampling this is and support your answer.

4) We have a group of families whose annual incomes are normally distributed with a mean of $45,000 and a standard deviation of $11,000. What percentage of these families has an annual income between $29,600 and $53,800?

5) We roll 5 six-sided die. What is the probability of obtaining exactly two 1s?

Expert Solution

orchestra answered 1 year ago

1) From the data table given, compute the population standard deviation, ?. 2) From the data...

1) From the data table given, compute the population standard deviation, ?. 2) From the data table given, compute the Upper Control Limit for s (UCLs) 3) From the data table given, compute the centerline, Xbar-bar. 4) From the data table given, compute the Average of s values, sbar. 5)Calculate the Upper Control Limit, UCLXbar 6) From the data table given, compute the Lower Control Limit, LCLXbar This table was all the information given. I was wondering if I was...

The mean of a population is 75 and the standard deviation is 13. The shape of...

The mean of a population is 75 and the standard deviation is 13. The shape of the population is unknown. Determine the probability of each of the following occurring from this population. a. A random sample of size 32 yielding a sample mean of 76 or more b. A random sample of size 160 yielding a sample mean of between 74 and 76 c. A random sample of size 218 yielding a sample mean of less than 75.2 (Round all...

1. Find the mean, median, mode, population standard deviation and variance of the given data: Items:...

1. Find the mean, median, mode, population standard deviation and variance of the given data: Items: 3,5,6,9,10,12,15 Frequency: 1,4,2,12,5,4,2 2.Find the mean, median, mode, sample standard deviation and variance of the discrete frequency distribution: Items: 2,5,6,7,12 Frequency:1,3,10,4,2

1. What is the key difference between a population standard deviation and the standard deviation of...

1. What is the key difference between a population standard deviation and the standard deviation of a sampling distribution? 2. How does this effect the normal distribution for the sample? (i.e. shape)

1. A normally distributed population has a mean of 69 and a standard deviation of 13....

1. A normally distributed population has a mean of 69 and a standard deviation of 13. Sample averages from samples of size 24 are collected. What would be the lower end of the centered interval that contains 95% of all possible sample averages? Round to the nearest hundredth 2. Suppose a sample of 104 healthy children is taken from a population with a standard deviation of 0.4 degrees Fahrenheit. What would be sigma x-bar? Round to the nearest thousandth

The mean of a population is 75 and the standard deviation is 12. The shape of...

The mean of a population is 75 and the standard deviation is 12. The shape of the population is unknown. Determine the probability of each of the following occurring from this population. a. A random sample of size 35 yielding a sample mean of 78 or more b. A random sample of size 150 yielding a sample mean of between 73 and 76 c. A random sample of size 219 yielding a sample mean of less than 75.8

The mean of a population is 77 and the standard deviation is 12. The shape of...

The mean of a population is 77 and the standard deviation is 12. The shape of the population is unknown. Determine the probability of each of the following occurring from this population. a. A random sample of size 35 yielding a sample mean of 81 or more b. A random sample of size 150 yielding a sample mean of between 76 and 80 c. A random sample of size 221 yielding a sample mean of less than 77.2 (Round all...

Given a normal distribution with a mean of 120 and a standard deviation of 12, what...

Given a normal distribution with a mean of 120 and a standard deviation of 12, what percentage of values is within the interval 96 to 144? 1. 32% 2. 50% 3. 95% 4. 68% 5. 99.7%

1. calculate the standard deviation for the following returns: -10, 10, 13, -4, 5 2. a...

1. calculate the standard deviation for the following returns: -10, 10, 13, -4, 5 2. a stock has an expected return of 13.5%, its beta is 1.17 and the risk-free rate is 5.5%. what must the expected return on the market be? 3. Systematic Risk is fully diversifiable (T/F)

Sample data: 10 8 7 13 12 9 11 7 13 - calculate the Mean, Variance,...

Sample data: 10 8 7 13 12 9 11 7 13 - calculate the Mean, Variance, Standard Deviation, 25th percentile, Median, and the 75th percentile.

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