If the population mean number of friends was 4.10, and standard deviation 2.46, what is the...
If the population mean number of friends was 4.10, and standard deviation 2.46, what is the likelihood that the class mean of 4.76 (or higher) would be obtained from this population due to chance?
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If the population mean number of friends was 4.10, and standard
deviation 2.46, what is the...
The population mean score for a particular exam is 74 and the standard deviation is 9....
The population mean score for a particular exam is 74 and the standard deviation is 9. What are the mean and standard deviation of the class average score for classes composed of 36 students randomly drawn from the population?
4) A population has a mean of μ = 55 and a standard deviation of σ...
4) A population has a mean of μ = 55 and a standard deviation of σ = 15. a) If 3 points were added to every score in the population, what would be the new values for the mean and standard deviation? b) If every score in the population were multiplied by 2, then what would be the new values for the mean and standard deviation?
For the following situation, find the mean and standard deviation of the population. List all samples(with...
For the following situation, find the mean and standard deviation of the population. List all samples(with replacement) of the given size from that population. Find the mean and standard deviation of the sampling distribution and compare them with the mean and standard deviation of the population. The number of DVDs rented by each of three families in the past month is 6,11,and 4. Use a sample size of 2. The mean of the population is? The standard deviation of the...
A recent census revealed that the population mean and population standard deviation for rent paid for...
A recent census revealed that the population mean and population standard deviation for rent paid for studio apartments a city was $1,090 and 30, respectively. This census was way too expensive, so the city is now exploring what it could learn from a random sample a) What is the probability that a sample of 500 would produce a sample mean within $1 of the population mean? b) What is the probability that a sample of 5,000 would produce a sample...
a) If we assume the population mean is 98.60 and the standard deviation is 0.6, what...
a) If we assume the population mean is 98.60 and the standard deviation is 0.6, what is the probability of a single person having a temperature of 98.25 or less? (Round to four decimal places. This should be the theoretical probability that is calculated, NOT the empirical probability from the simulation.) b) If we assume the population mean is 98.60 and the standard deviation is 0.6, what is the probability of obtaining a sample mean of 98.25 or less from...
a. For classes of "149" students, find the mean and standard deviation for the number born...
a. For classes of "149" students, find the mean and standard deviation for the number born on the 4th of July. Ignore leap years. b. For a class of 149 students, would two be an unusually high number who were born on the 4th of July? a. The value of the mean is μ= _________. The value of the standard deviation is σ= ____________. b. For a class of 149 students, would two be an unusually high number who...
99% confidence interval for the mean are assuming that the population standard deviation for the number...
99% confidence interval for the mean are assuming that the population standard deviation for the number of soft drinks consumed each week is 0.9. the study found that for a sample of 1097 teenagers the mean number of soft drinks consumed per week is 6.3. construct the desired confidence interval. round to one decimal place. Lower and Upper endpoint?
A sample is selected from a population with a mean of µ=80 and a standard deviation...
A sample is selected from a population with a mean of µ=80 and a standard deviation of σ=20. What is the expected value of the mean? Just put number. You do not have to put symbol in front of answer.
A sample is selected from a population with a mean of µ=80 and a standard deviation...
A sample is selected from a population with a mean of µ=80 and a standard deviation of σ=20. What is the expected value of the mean? Just put number. You do not have to put symbol in front of answer.
4) A large number of voltages show a mean of 118.5V and a population standard deviation...
4) A large number of voltages show a mean of 118.5V and a population standard deviation of 1.20V. Determine the percentage of data that falls between 116 and 120 Volts.
4) A large number of voltages show a mean of 118.5V and a population standard deviation of 1.20V. Determine the percentage of data that falls between 116 and 120 Volts.
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