A population has a standard deviation of 16.3 if a sample size of 81 is selected from this population, what is the probability that the sample mean will be within +/-1 of the population mean? Oa 10 O b. 1.3458 Oc 1.8111 Id 0,4176
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A population has a standard deviation of 16.3 if a
Oa 10
O b. 1.3458
Oc 1.8111
Id 0,4176
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- miles Suppose that the speeds of cars travelling on California freeways are normally distributed with a mean of 63 -. The highway patrol's policy is to issue hour miles tickets for cars with speeds exceeding 75 . The records show that exactly 2% of the speeds exceed this limit. Find the standard deviation of the speeds of hour cars travelling on California freeways. Carry your intermediate computations to at least four decimal places. Round your answer to at least one decimal place. miles hour6A population has a mean u= 89 and a standard deviation o = 18. Find the mean and standard deviation of a sampling distribution of sample means with sample size n= 36. ... H: = (Simplify your answer.) tc TH di Det pro Help me solve this View an example Get more help - Clear all Check answer MacBook Air 80 DII esc F1 F2 F3 F4 F5 F6 F7 F8 @ 23 $ & 1 2 3 4 7 8. Q W E R T Y tab s lock A S D F G H J K V N control option command
- The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 320 g to a standard deviation of 14 g. Find the weight that corresponds to each event. Round your answers to two decimal places. A. Highest 30% _______ B. Middle 70%. _______ to ______ C. Highest 90% _______ D. Lowest 20% ________Discussion QUSTION. Lets take the sample of books from the library by picking 2 books from each shelf and note the age of each of the book. We took a sample of 64 books and found that the mean age is 52 years and the standard deviation is 6 years. CI =(52−664√(1.96),52+664√(1.96))(50.53, 53.47) CI =(52−664√(1.96),52+664√(1.96))(50.53, 53.47) ******QUESTION: Use the mean and the standard deviation obtained from the THE PROBLEM ABOVE ^^ and test the claim that the mean age of all books in the library is greater than 2005. ****sample size
- A nutritionist claims that children 13 to 15 years old are consuming less than the recommended iron intake of 20.5 mg. To test the nutritionist's claim of iron deficiency, a random sample of children 13 to 15 years old will be obtained. Assume that the data for iron intake follows the normal distribution with a standard deviation of 4.75 mg. Find the size of the sample that you should take if you want to estimate the true mean iron intake to within 1 mg with 99% confidence. 62 149 O 150 O 61Next Question Assume that a randomly selected subject is given a bone density test. Those test s Draw a graph and find the probability of a bone density test score between - 2.15 and 2.15. distributed with a mean of 0 and a standard deviation of 1. ..... Sketch the region. Choose the correct graph below. A. В. С. D. -2.15 2.15 -2.15 2.15 -2.15 2.15 -2.15 2.15 The probability is (Round to four decimal places as needed.)Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P, the 11th percentile. This is the bone density score separating the bottom 11% from the top 89%. Which graph represents P ? Choose the correct graph below. O A. O B. OD. P11 P11 P11 P11 The bone density score corresponding to P1 is (Round to two decimal places as needed.) Click to select your answer(s). APR tv MacBook Air F9 F10 LLA 20 F3 F6 F8 F4 F5 F1 F2 & #3 7 8. %24
- Indicated z scorehi - i need assistance with this problemst K Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. Click to view page 2 of the table. The area of the shaded region is (Round to four decimal places as needed.) 1 95 125
