10. Assume that all grade-point averages are to be standardized on a scale between 0 and 5. How many grade-point averages must be obtained so that the sample mean is within 0.01 of the population mean? Assume that a 95% confidence level is desired. If using the range rule of thumb, σ can be estimated as range/4 = 5−0/4 = 1.25. Does the sample size seem practical? The required sample size is ???.
10. Assume that all grade-point averages are to be standardized on a scale between 0 and...
Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many grade-point averages must be obtained so that the sample mean is within 0.013 of the population mean? Assume that a 95% confidence level is desired. If using the range rule of thumb, sigma can be estimated as range/4 = 4-0/4 = 1. Does the sample size seem practical? The required sample size is ??
Assume that all grade-point averages are to be standardized on a scale between 0 and 6. How many grade-point averages must be obtained so that the sample mean is within 0.014 of the population mean? Assume that a 95% 6 0 1.5. Does the sample size seem practical? range confidence level is desired. If using the range rule of thumb, o can be estimated as 4 The required sample size is (Round up to the nearest whole number as needed.)
Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many grade-point averages must be obtained so that the sample mean is within 0.008 of the population mean? Assume that a 95% confidence level is desired. If using the range rule of thumb, sigma can be estimated as StartFraction range Over 4 EndFraction equalsStartFraction 4 minus 0 Over 4 EndFraction equals1. Does the sample size seem practical?
Assume that all grade-point averages are to be standardized on a scale between 0 and 6. How many grade-point averages must be obtained so that the sample mean is within range 6-0 0.012 of the population mean? Assume that a 98% confidence level is desired. If using the range rule of thumb, o can be estimated as = 1.5. Does the sample size 4 4 seem practical? The required sample size is (Round up to the nearest whole number as...
Assume that all grade-point averages are to be standardized on a scale between 0 and 55. How many grade-point averages must be obtained so that the sample mean is within 0.0150.015 of the population mean? Assume that a 9898% confidence level is desired. If using the range rule of thumb, sigmaσ can be estimated as StartFraction range Over 4 EndFractionrange4equals=StartFraction 5 minus 0 Over 4 EndFraction5−04equals=1.251.25. Does the sample size seem practical? The required sample size is nothing. (Round up...
4 Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many grade-point averages must be obtained so that the sample mean is within 0.006 of the population mean? Assume that a 98% range 4-0 confidence level is desired. If using the range rule of thumb, o can be estimated as = 1. Does the 4 sample size seem practical? The required sample size is (Round up to the nearest whole number as...
The grade point averages for 10 randomly selected high school students are listed below. Assume the grade point averages are normally distributed. 2.0, 3.2, 1.8, 2.9, 0.9, 4.0, 3.3, 2.9, 3.6, 0.8 Find a 98% confidence interval for the true mean.
Wo e parts (a) The grade point averages (GPA) for 12 randomly selected college students are shown on the right Complet 0 0 1.6 0.8 40 2.1 1.1 3.5 0.4 2.4 3.3 through (c) below Assume the population is normally distributed (a) Find the sample mearn xRound to two decimal places as needed) (b) Find the sample standard deviation sRound to two decimal places as needed.) (c) Construct a 95% confidence interval for the population mean A 95% confidence interval...
The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) below 2.5 34 2.6 1.9 0.5 4.0 2.2 1.2 3.8 0.2 2.3 3.1 Assume the population is normally distributed. (a) Find the sample mean. x(Round to two decimal places as needed) (b) Find the sample standard deviation. s(Round to two decimal places as needed.) (c) Construct a 95% confidence interval for the population mean A 95% confidence interval for...
The grade point averages (GPA) for 12 randomly selected college students are shown on the right. Complete parts (a) through (c) below. Assume the population is normally distributed. 2.2 3.2 2.5 1.6 0.6 4.0 2.3 1.3 3.6 0.3 2.3 3.4 a) Find the sample mean. x overbar x equals= (Round to two decimal places as needed.) (b) Find the sample standard deviation. s equals= (Round to two decimal places as needed.) (c) Construct a 95% confidence interval for the population...