Given a normal distribution with n = 26, µ = 30 and σ = 6 Find a. b. C. The value of x that has 80% of the normal curve area to the left. The value of x that has 65% of the normal curve area to the right. The two values of x that contains the middle 75% of the normal curve area.
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- A normal distribution has a population mean of u = 90 and a standard deviation population of o =15. For each of the following scores, indicate whether the tail is to the right or left of the score and find the proportion of the distribution located in the tail. a. X 5 93 b. X 5 110 c. X 5 85 d. X 5Still need D , E and FIn this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. The western United States has a number of four-lane interstate highways that cut through long tracts of wilderness. To prevent car accidents with wild animals, the highways are bordered on both sides with 12-foot-high woven wire fences. Although the fences prevent accidents, they also disturb the winter migration pattern of many animals. To compensate for this disturbance, the highways have frequent wilderness underpasses designed for exclusive use by deer, elk, and other animals. In Colorado, there is a large group of deer that spend their summer months in a region on one side of a highway and survive the winter months in a lower region on the other side. To…
- In this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. The western United States has a number of four-lane interstate highways that cut through long tracts of wilderness. To prevent car accidents with wild animals, the highways are bordered on both sides with 12-foot-high woven wire fences. Although the fences prevent accidents, they also disturb the winter migration pattern of many animals. To compensate for this disturbance, the highways have frequent wilderness underpasses designed for exclusive use by deer, elk, and other animals. In Colorado, there is a large group of deer that spend their summer months in a region on one side of a highway and survive the winter months in a lower region on the other side.…21 d-fAfter 4 points are added to every score in a distribution, the mean is calculated and found to be μ = 26. What was the value of the mean for the original distribution? A. 30 B. Cannot be determined from the information given C. 34 D. 22
- In each part, find the area under the standard normal curve that lies between the specified z-score, sketch a standard normal curve, and shade the area of interest. b. -2 and 2 c. - 3 and 3 a. - 1 and 1 a. Find the area under the standard normal curve that lies between - 1 and 1, sketch a standard normal curve, and shade the area of interest. The area under the standard normal curve that lies between - 1 and 1 is (Type an integer or decimal rounded to four decimal places as needed.)Find to.20 for T distribution with 29 degrees of freedom. to.20 (Round the answer to 3 decimal places)Draw the normal curve, shade the given area, then find Z-score. ANSWERS SHOULD BE IN 2 DECIMAL PLACES ONLY. a. If the area to the right of +Z is 0.0329 b. If the area to the left of -Z is 0.4522 c. If the area to the left of +Z is 0.9925
- FOR THE NORMAL DISTRIBUTION FIND THE AREA GREATER Z= -1.3.Build the frequency distribution table with 5 classes, and for the following observations for some students marks? then Answer the following Questions from the constructed table... A) Which class has maximum frequency?... B) Which class has minimum frequency? .. C) Classify the ?type of table 88 39 38 45 50 76 78 33 28 36 88 46 67 72 58 30 85 56 51 42 38 68 67 84 41 52 76 69 41 685 トIn this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer.In the following data pairs, A represents birth rate and B represents death rate per 1000 resident population. The data are paired by counties in the Midwest. A random sample of 16 counties gave the following information. A: 12.5 13.2 12.6 12.1 11.4 11.1 14.2 15.1 B: 9.6 14.3 10.7 14.2 13.2 12.9 10.9 10.0 A: 12.5 12.3 13.1 15.8 10.3 12.7 11.1 15.7 B: 14.1 13.6 9.1 10.2 17.9 11.8 7.0 9.2