>Question 36Create a 80% confidence interval for a population mean from a sample of size 61 with sample mean = 3.The population standard deviation is known to be o = 0.51.[three decimal accuracy][three decimal accuracy]> Next Question10MacBook Airesc80F1F2F3F4F5F6@232$%1246QW

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Question 36 Create a 80% confidence interval for a population mean from a sample of size 61 with sample mean = 3. The population standard deviation is known to be o = %3D [three decimal accuracy] [three decimal accuracy] > Next Question

Question 36 Create a 80% confidence interval for a population mean from a sample of size 61 with sample mean = 3. The population standard deviation is known to be o = %3D [three decimal accuracy] [three decimal accuracy] > Next Question

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question 3 10 pts Suppose a sample of 30 ECC students are given an IQ test. If the sample has a standard deviation of 12.23 points, find a 90% confidence interval for the population standard deviation. FOLLOW THE PANIC METHOD Edit View Insert Format Tools Table 12pt ✓ v Paragraph B IUAT²:
QUESTION 7 The daily electrical energy consumption (in Watts) during July for a random sample of 16 households was recorded. The mean was 3307 W and the standard deviation was 327 W. Assume the underlying distribution of the consumption is normal. Find the lower confidence limit (LCL) of the 95% confidence interval for the mean daily electrical energy consumption during that month. Round your answer to the nearest whole number (integer).
QUESTION 32 "A clinican has found a significant effect of a new drug and wants to know the effect size. If the population mean =120 with a standard deviation = 19.5 and the clinical observed a sample of n = 64 had a mean = 116, then what would be the effect size in terms of Cohen's d?" 2.44 -1.64 0.21 -0.62
QUESTION 9 If the population standard deviation is equal to 7.68 and the sample size is 117, what is the margin of error for the corresponding 97% confidence interval to estimate the population mean? Use Excel to calculate and round your answer to 2 decimals.
QUESTION 9 Assume that adults have IQ scores that are normally distributed with a mean of mu = 105 and a standard deviation sigma = 15. Find the probability that a randomly selected adult has an IQ between 85 and 125 and type an integer or decimal rounded to four decimal places. Make sure to use the positive or negative z score charts attached, in the eBook on MSL, or in a hardcopy of the textbook neg z scores.pdf pos z scores.pdf A. 0.4177 В. 0.5763 O C. 0.8176 D.0.6139 QUESTION 10 Assume a population of 40, 45, 47, and 53. Assume that samples of sizen=2 are randomly selected with replacement from the population. Listed below are the sixteen different samples. 45 53 53 53 45 40 45 45 45 47 40,53 4753 40 40 40,45 40 47 47 40 47 45 47 47 63 40 53 45 53 47 Click Sqve and Submit to saue and submit. Chck Save All Answers to save all ansuers. Save All An M
Question 6 Ho Select an answer 0² The mean age when smokers first start is 13 years old with a population standard deviation of 2 years. A researcher thinks tha: smoking age has significantly changed since the invention of ENDS-electronic nicotine delivery systems. A survey of smokers of this generation was done to see if the mean age has changed. The sample of 34 smokers found that their mean starting age was 12.3 years old. Do the data support the claim at the 10% significance level? What are the correct hypotheses? Н1 Ba Te HD SIX P s² Critical Values = ± years years find the following: (Give answer to at least 4 decimal places) (Give answer to at least 4 decimal places) Based on the above we choose to Select an answer The correct summary would be: Select an answer mean age smokers first start is different than 13. that the claim that the
QUESTION 6 For the major airlines, 21% of all flights depart at least 15 minutes late with a standard deviation of 5%. Currently, 24% of all American Airlines flights depart at least 15 minutes late. If American wants to be in the top 10% of all major airlines with the FEWEST late departures, to what level must American cut its late departures? (please round your answer to 1 decimal place) Please incorporate Excell or graphing calculator functions in your answer.
Question 5 > Past surveys indicate that 58% of Americans personally worry a great deal about federal spending and the budget deficit. Would it be considered unusual to have a random sample of 193 Americans where 143 of them personally worry a great deal about federal spending and the budget deficit? (We say that any observation more than 2 standard deviations from the mean is unusual.) оо Yes No Cannot tell from the information given
Question 2 There are hundreds of apples on the trees, so you randomly choose just 63 apples and get a mean weight of 88.08 grams with a standard deviation of 5.11 grams. Assuming that the weight of the apples is normally distributed, what is the margin of error of the 90% confidence interval for the mean weight of the apples. Note: Round your answers to 4 decimal places.
Question 6 95 U Vetalis The number of potholes in any given 1 mile stretch of freeway pavement in Pennsylvania has a bell-shaped distribution. This distribution has a mean of 38 and a standard deviation of 10. Using the empirical rule, what is the approximate percentage of 1-mile long roadways with potholes numbering between 8 and 48? Do not enter the percent symbol. ans = Question Help: DPost to forum