Question

In: Statistics and Probability

For each question draw the normal curve and shade the area where applicable Do not give...

For each question draw the normal curve and shade the area where applicable

Do not give calculator key strokes. ( Give the formula used )

Circle your answer to each question.

3. The daily salaries of substitute teachers for eight local school district is given:

                              60, 56, 60, 55, 70, 55, 60, 55.

  1. What is the point estimate of the population mean μ. (Sample Mean)
  2. Find the 90% confidence interval for the mean salaries of substitute teachers in the eight local school districts.

Solutions

Expert Solution

60 1.125 1.265625
56 -2.875 8.265625
60 1.125 1.265625
55 -3.875 15.01563
70 11.125 123.7656
55 -3.875 15.01563
60 1.125 1.265625
55 -3.875 15.01563

Refer t-table or use excel function "=T.INV.2T(0.10,7)" to find the critical value of t.


Related Solutions

(a) draw and label a sketch of the normal curve (b) identify and shade the area...
(a) draw and label a sketch of the normal curve (b) identify and shade the area of interest (c) identify any formulas and values substituted (d) identify the calculator command used and values entered into the calculator (e) write your response as a decimal rounded to three places The tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,000 miles and a standard deviation of 2800 miles....
(a) draw and label a sketch of the normal curve (b) identify and shade the area...
(a) draw and label a sketch of the normal curve (b) identify and shade the area of interest (c) identify any formulas and values substituted (d) identify the calculator command used and values entered into the calculator (e) write your response as a decimal rounded to three places A greenhouse in a tri-county area has kept track of its customers for the last several years and has determined that 28% of its customers plant a vegetable garden in the spring.  ...
a. State the null and alternate hypothesis, and state the claim/Draw the Bell curve and shade...
a. State the null and alternate hypothesis, and state the claim/Draw the Bell curve and shade the appropriate tail b. State the Critical value c.. Compute the test value d. State the decision e. Conclusion 4. A machine that fills beverage cans is supposed to put 16 ounces of beverage in each can. Following are the amounts measured in a simple random sample of eight cans. Assume that the sample is approximately normal. Can you conclude that the mean volume...
Can you show how to draw the normal curve for each of the problems and label...
Can you show how to draw the normal curve for each of the problems and label it as well? Heights of MEN in the U.S. are normally distributed µ = 69.6 inches with σ = 3 inches. -________ percent (to nearest %) of men in the U.S. are either shorter than 5 ft. or taller than 6 ft? -In a group of 150 U.S. men, approximately ________ of them should be shorter than 65 inches. -A male height of _______________...
Can you show how to draw the normal curve for each of the problems and label...
Can you show how to draw the normal curve for each of the problems and label it as well? Heights of MEN in the U.S. are normally distributed µ = 69.6 inches with σ = 3 inches. -________ percent (to nearest %) of men in the U.S. are either shorter than 5 ft. or taller than 6 ft? -In a group of 150 U.S. men, approximately ________ of them should be shorter than 65 inches. -A male height of _______________...
Consider the normal curve. (Give your answers correct to four decimal places.) (a) Find the area...
Consider the normal curve. (Give your answers correct to four decimal places.) (a) Find the area to the right of z = 0.00. (b) Find the area to the right of z = 1.28. (c) Find the area to the right of z = -1.67. (d) Find the area to the left of z = 1.46. (e) Find the area to the left of z = -1.46.
How do you find the area between two values under the normal curve?
How do you find the area between two values under the normal curve?
Find the probabilities associated with the standard normal distribution (Draw the area being found in each...
Find the probabilities associated with the standard normal distribution (Draw the area being found in each part) a. Pz≥.23=                                    b. Pz≤-2.36=                               c. P-3.25≤z≤1=
In a normal distribution curve, what percentage of the area under the curve is contained in...
In a normal distribution curve, what percentage of the area under the curve is contained in the region, on one side of the mean, between 1 standard deviation from the mean and 2 standard deviations from the mean? A. 95% B. 68.27% C. 50% D. 27.24%% E. 13.59%
Draw the structures of organic compounds A and B. Indicate stereochemistry where applicable.
Draw the structures of organic compounds A and B. Indicate stereochemistry where applicable.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT