90 percent confidence    b. 95 percent confidence  c. 99 percent

Use the sample information  x=36, o=7, n=17 calculate the following confidence intervals for u assuming the sample is from a normal population  90 percent confidence  b.95 percent confidence

When the population standard deviation is unknown and the sample size is greater than 30, what table value should be used in computing a confidence interval for a mean?      a. z b. t c. chi square d. standard deviation

Tina catches a 14-pound bass.  She does not know the population mean or standard deviation.  So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds.  Find the t and calculate a 95% (α = .05) confidence interval.

Construct the confidence interval for the population mean u .c​=.98, x=6.4, o=0.7, n = 40

Use the given degree of confidence and sample data to construct a confidence interval for the population mean u. Assume that the population has a normal distribution. The principal randomly selected six students to take an aptitude test. Their scores were: 88.0 84.1 74.9 83.2 83.7 85.5 Determine a 90% confidence interval for the mean score for all students. Seleccione una: A. 79.49 < µ < 86.98 B. 86.98 < H < 79.49 C. 79.59 < u < 86.88 D. 86.88 < u <79.59

Use the given degree of confidence and sample data to construct a confidence interval for the population mean μ. Assume that the population has a normal distribution.Thirty randomly selected third graders were weighed. If the sample mean weight was 90 pounds and the standard deviation s = 6.7 pounds, construct a 99% confidence interval for the mean weight of all third graders.

Determine whether the following statement is true or false. To construct a confidence interval about the mean, the population from whlch the sample is drawn must be approximately normal. This statement is

Find 90% confidence interval

Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96