A population has a mean of 300 and a standard deviation of 80. Suppose a sample...
A population has a mean of 400 and a standard deviation of 50. Suppose a sample of size 100 is selected and I is used to estimate u. Use z-table. a. What is the probability that the sample mean will be within +9 of the population mean (to 4 decimals)? b. What is the probability that the sample mean will be within +13 of the population mean (to 4 decimals)? A population proportion is 0.3. A sample of size 300...
A population has a mean of 300 and a standard deviation of 70. Suppose a sample of size 100 is selected and is used to estimate What is the probability that the sample mean will be within +/- 3 of the population mean (to 4 decimals)? What is the probability that the sample mean will be within +/- 12 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decimal places.)
The Food Marketing Institute shows that 16% of households spend more than $100 per week on groceries. Assume the population proportion is p = 0.16 and a sample of 900 households will be selected from the population. Use z-table. Calculate (), the standard error of the proportion of households spending more than $100 per week on groceries (to 4 decimals). What is the probability that the sample proportion will be within +/- 0.03 of the population proportion (to 4 decimals)?...
Video A population has a mean of 200 and a standard deviation of 80 . Suppose a sample of size 100 is selected and is used to estimate μ. Use z-table. a. What is the probability that the sample mean will be within +9 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decimal places.) b. What is the probablity that the sample mean will be within 13 of the population mean (to 4...
A population has a mean of 300 and a standard deviation of 80. Suppose a sample of size 10 is selected and x̅ is used to estimate . Use z-table. a. What is the probability that the sample mean will be within +/-4 of the population mean (to 4 decimals)? b. What is the probability that the sample mean will be within +/- 13of the population mean (to 4 decimals)?
The Food Marketing Institute shows that of households spend more than per week on groceries. Assume the population proportion is and a simple random sample of households will be selected from the population. Use z-table. a. Calculate the sampling distribution of , the proportion of households spending more than per week on groceries. (to 2 decimals) (to 4 decimals) b. What is the probability that the sample proportion will be within of the population proportion (to 4 decimals)? eBook The Food Marketing Institute shows that...
A population has a mean of 400 and a standard deviation of 90. Suppose a sample of size 100 is selected and x with bar on top is used to estimate mu. What is the probability that the sample mean will be within +/- 3 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decimal places.) What is the probability that the sample mean will be within +/- 14 of the population mean (to...
a population has a mean of 200 and a standard deviation of 60. suppose a sample of size is 100 is selected and sample mean is used to estimate the mean. Use z table. a. what is the probability that the sample mean will be within +/-7 of the population mean (to 4 decimals) b. what is the probability that the sample mean will be within +/-16 of the population mean (to 4 decimals) round z value in intermediate calculations...
A population has a mean of 300 and a standard deviation of 60. Suppose a sample of size 100 is selected and is used to estimate . Use z-table. What is the probability that the sample mean will be within +/- 5 of the population mean (to 4 decimals)? What is the probability that the sample mean will be within +/- 12 of the population mean (to 4 decimals)?
A population has a mean of 200 and a standard deviation of 60. Suppose a sample of size 100 is selected and is used to estimate . What is the probability that the sample mean will be within +/- 6 of the population mean (to 4 decimals)? (Round z value in intermediate calculations to 2 decimal places.)