Based on a sample of 40 people, the sample mean GPA was 2.15 with a standard deviation of 0.04 The test statistic is: (to 2 decimals) The p-value is: (to 2 decimals) Based on this we:
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- forD, E, and F I have the following and want to see if correct:D=0.9579 E=14 F= var(x)=4.2 std deviation= 2.05Please answer the question in the picture below to answer the question in the other pictureThe next five questions refer to the following scenario: • sample mean T = 10 • sample size n = 100 • population standard deviation O = 4
- Solve only the part a, b and c for question 10.Use z scores to compare the given values. The tallest living man at one time had a height of 238 cm. The shortest living man at that time had a height of 142.4 cm. Heights of men at that time had a mean of 175.45 cm and a standard deviation of 5.59 cm. Which of these two men had the height that was more extreme? ... Since the z score for the tallest man is z = 0 and the z score for the shortest man is z = the man had the height that was Im- more extreme. (Round to two decimal places.) shortest tallestThis assignment is worth 1 points. The extra point will be added to your overall course grade. For example: if you receive an 88% in the course you can receive up to 1 point giving you a new score of 89%. The following rubric will be used. 0.25 point for drawing the normal distribution curve with the mean value labeled on the curve and the appropriate area shaded. 0.25 point for determining the value of the standard deviation of the sample mean. 0.5 point for finding the correct probability. All work must be shown in order to receive any credit. Please upload your completed assignment here. The length of time taken on the SAT for a group of students is normally distributed with a mean of 2.5 hours and a standard deviation of 0.25 hours. A sample size of n = 60 is drawn randomly from the population. Find the probability that the sample mean is between two hours and three hours.
- Find mean & standard deviation using table: X Frequency 2 20% 5 10% 8 15% 10 30% 12 25% For the mean, i get 7.4 & 20%. Std dev i get 4.459362. Just wanted to check my numbers.The SAT scores of students are normally distributed with a mean of 950 and a standard deviation of 200. Q19 What percentage of students score between 1100 and 1200? Your answer should be in % and have two digits after the period. So, if your answer is 50.723%, write 50.72. Your Answer:Please answer the question in the picture below to answer the question in the other picture
- for a population with a standard deviation of 4.2 and mean of 32.5, draw a bell shaped curve, marking location of the mean and the numbers that correspond with all the standard deviations Type your answer here:please help me fix this issue, using the =t.inv on excel is giving me -2.406 can -2.047 be a typo?? thanksWe want to obtain a sample to estimate a population mean. Based on previous evidence, researchers believe the population standard deviation is approximately �=76.4. We would like to be 95% confident that the estimate is within 0.5 of the true population mean. How large of a sample size is required?�=