Homework Answers
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9. P( mean wait is between 11.6 and 13.6)=
Explain how to found your answer.
10....
10. A class has 8 students who are to be assigned seating by lot. What is...
10. A class has 8 students who are to be assigned seating by
lot. What is the probability that the students will be arranged in
order from shortest to tallest?
11. Minimum sample size
12. Probability?
Points: 5 10) A class has 8 students who are to be assigned seating by lot. What is the probability that the students will be arranged in order from shortest to tallest? (Assume that no two students are the same height.) Show your work...
i need help with all 3 please Find the indicated probability. Round to the nearest thousandth....
i need help with all 3 please
Find the indicated probability. Round to the nearest thousandth. Points: 5 20) In a batch of 8,000 clock radios 5% are defective. A sample of 7 clock radios is randomly selected from the 8,000 and tested. The entire batch will be rejected if at least one of those tested is defective. What is the probability that the entire batch will be rejected? Show your work below. A) 0.698 B) 0.302 C) 0.0500 D)...
Can someone explain how this P-value is found step-by step? Suppose that the sample mean is...
Can someone explain how this P-value is found step-by step? Suppose that the sample mean is x = 51.3, with n = 16 and st. dev = 2.5. Then we want to find the smallest significance level so that 51.3 is outside the acceptance region. In other words, since the symmetric acceptance region is centered at the hypothesized the population mean (u) = 50, we want the probability that the sample mean x is greater than 51.3 or less than...
Explain how you found the test statistic and p-value? Assume that a simple random sample has...
Explain how you found the test statistic and p-value?
Assume that a simple random sample has been solocted from a normally distributed population. Find the test statistic and P-value. Points: 5 19) Test the claim that the mean lifetime of car engines of a particular type is greater than 220,000 miles. Sample data are summarized as n = 23, X = 226,450 miles, and s = 11,500 miles. Use a significance level of a = 0.01. test statistic (1.5 points)...
Can someone explain on how to do 2 and 3 please thank you. would reject the...
Can someone explain on how to do 2 and 3 please thank
you.
would reject the claim. an effective way to treat Covid-19. 2. You wish to estimate, with 95% confidence, the mean time it takes to pet all of the cats at the animal shelter. You observe 13 random people and find that the average amount of time it took to pet the cats was 23 minutes with a standard deviation of 24 minutes. Assume the population is normally...
20. Find the indicated IQ score explain how you found your answer 21 What is the...
20. Find the indicated IQ score explain how you found your
answer
21 What is the expected profit show work
Provide an appropriate response. Points: 5 20) Find the indicated IQ score. The graph depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15 (as on the Wechsler test). The shaded area under the curve is 0.7622. A) 102.6 B) 129.6 C) 97.5 D) 110.7 Explain how you...
tnis p your answer sheets 1. A single card is drawn from 52-card deck (10) Let A denotes the event that the card is red and B denotes the e is spade. Are the events being? a) Mutually exclusive?...
tnis p your answer sheets 1. A single card is drawn from 52-card deck (10) Let A denotes the event that the card is red and B denotes the e is spade. Are the events being? a) Mutually exclusive? b) Dependent? What is your conclusion and B? Any exception? 2. Two team (A and B) play a series of baseball games. The team who v five-game-series wins the series. Consider A has home-field advantag probability of winning 0.7 if it...
3. Find the mean (p). (Round your answer to 3 decimal places) (2 points) the mean=8.177...
3. Find the mean (p). (Round your answer to 3 decimal places) (2 points) the mean=8.177 6 7 8 9 10 P(x) 0.236 0.063 0.214 0.262 0.225 4. Find the standard deviation (C) (Round your answer to 4 decimal places.) (3 points) the standard deviation=1.462 Suppose that samples of 100 are generated from the probability distribution and the mean of each sample is recorded. (2 points) 5. Find the mean of the sample means. (3 points) 6. Find the standard...
robem(1) Applications of statisties can be divided into two broad descript Andmernal states. Use your own...
robem(1) Applications of statisties can be divided into two broad descript Andmernal states. Use your own words to briefly define what descriptive statistics is and what inferential statistics is? Problem(2) Someone mention to you that there is a 6 6 9596-99% rule in statistics te your own words (or graph) to (briefly) explain what this rule is about? Problem(3) A sample (data set) contains the observations 13 12 15 10 9 11 16 find (a) the sample size? (b) ,...
Assume the grades has Normal distribution with the mean of 70, and the standard deviation of 15. Answer the following questions 1. Calculate 10t 25t* 50 75t and 90* percentiles once by converting to...
Assume the grades has Normal distribution with the mean of 70, and the standard deviation of 15. Answer the following questions 1. Calculate 10t 25t* 50 75t and 90* percentiles once by converting to the standard Normal distribution, and again directly (using the non-standard Normal distribution) 2. What percentage of students score between 80 and 90 in the exam? 3. What percentage of students fail? 4. What percentage of students pass with A? 5. Generate a sample of size 16...
10. A class has 8 students who are to be assigned seating by
lot. What is the probability that the students will be arranged in
order from shortest to tallest?
11. Minimum sample size
12. Probability?
Points: 5 10) A class has 8 students who are to be assigned seating by lot. What is the probability that the students will be arranged in order from shortest to tallest? (Assume that no two students are the same height.) Show your work...
i need help with all 3 please
Find the indicated probability. Round to the nearest thousandth. Points: 5 20) In a batch of 8,000 clock radios 5% are defective. A sample of 7 clock radios is randomly selected from the 8,000 and tested. The entire batch will be rejected if at least one of those tested is defective. What is the probability that the entire batch will be rejected? Show your work below. A) 0.698 B) 0.302 C) 0.0500 D)...
Explain how you found the test statistic and p-value?
Assume that a simple random sample has been solocted from a normally distributed population. Find the test statistic and P-value. Points: 5 19) Test the claim that the mean lifetime of car engines of a particular type is greater than 220,000 miles. Sample data are summarized as n = 23, X = 226,450 miles, and s = 11,500 miles. Use a significance level of a = 0.01. test statistic (1.5 points)...
Can someone explain on how to do 2 and 3 please thank
you.
would reject the claim. an effective way to treat Covid-19. 2. You wish to estimate, with 95% confidence, the mean time it takes to pet all of the cats at the animal shelter. You observe 13 random people and find that the average amount of time it took to pet the cats was 23 minutes with a standard deviation of 24 minutes. Assume the population is normally...
20. Find the indicated IQ score explain how you found your
answer
21 What is the expected profit show work
Provide an appropriate response. Points: 5 20) Find the indicated IQ score. The graph depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15 (as on the Wechsler test). The shaded area under the curve is 0.7622. A) 102.6 B) 129.6 C) 97.5 D) 110.7 Explain how you...
tnis p your answer sheets 1. A single card is drawn from 52-card deck (10) Let A denotes the event that the card is red and B denotes the e is spade. Are the events being? a) Mutually exclusive? b) Dependent? What is your conclusion and B? Any exception? 2. Two team (A and B) play a series of baseball games. The team who v five-game-series wins the series. Consider A has home-field advantag probability of winning 0.7 if it...
3. Find the mean (p). (Round your answer to 3 decimal places) (2 points) the mean=8.177 6 7 8 9 10 P(x) 0.236 0.063 0.214 0.262 0.225 4. Find the standard deviation (C) (Round your answer to 4 decimal places.) (3 points) the standard deviation=1.462 Suppose that samples of 100 are generated from the probability distribution and the mean of each sample is recorded. (2 points) 5. Find the mean of the sample means. (3 points) 6. Find the standard...
robem(1) Applications of statisties can be divided into two broad descript Andmernal states. Use your own words to briefly define what descriptive statistics is and what inferential statistics is? Problem(2) Someone mention to you that there is a 6 6 9596-99% rule in statistics te your own words (or graph) to (briefly) explain what this rule is about? Problem(3) A sample (data set) contains the observations 13 12 15 10 9 11 16 find (a) the sample size? (b) ,...
Assume the grades has Normal distribution with the mean of 70, and the standard deviation of 15. Answer the following questions 1. Calculate 10t 25t* 50 75t and 90* percentiles once by converting to the standard Normal distribution, and again directly (using the non-standard Normal distribution) 2. What percentage of students score between 80 and 90 in the exam? 3. What percentage of students fail? 4. What percentage of students pass with A? 5. Generate a sample of size 16...
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