Statistics Canada, Show that 15.7% of Canadian women smoke. Consider a sample of 400 Canadian women....
Statistics Canada, Show that 15.7% of Canadian women smoke.
Consider a sample of 400 Canadian women. What is the probability that 50 or less smoke? Given the large sample size, use the normal approximation for this distribution
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Statistics Canada, Show that 15.7% of Canadian women smoke.
Consider a sample of 400 Canadian women....
According to the Canadian Internet Use Survey conducted by Statistics Canada in 2018, 74% of Canadian...
According to the Canadian Internet Use Survey conducted by Statistics Canada in 2018, 74% of Canadian seniors (65 and over) used the Internet on a daily or near-daily basis. A market researcher wishes to estimate, the current (Summer 2020) proportion of all Canadian seniors who use the Internet on a regular basis. (a) How large should the sample size be so that a 96 % confidence interval for the proportion of all Canadian seniors who use the Internet on a...
In a certain country, 20% of the female adult population smoke regularly. In a random sample...
In a certain country, 20% of the female adult population smoke regularly. In a random sample of 800 adults, what is the probability that: a) less than 150 are smokers? Use the normal approximation to the binomial. b) 200 or more are smokers? Use the normal approximation to the binomial. c) Find answers to (a) and (b) using the binomial distribution and R. Copy and paste the code and the answer into your document.
1. In a particular facility, 60% of students are men and 40% are women. In a...
1. In a particular facility, 60% of students are men and 40% are women. In a random sample of 50 students what is the probability that more than half are women? Let the random variable X = number of women in the sample. Assume X has the binomial distribution with n = 50 and p = 0.4. What is the expected value and variance of the random variable X? (6 points) In a random sample of 50 students what is...
)A sample survey interviews an SRS of 267 college women. Suppose(as is roughly true) that 70%...
)A sample survey interviews an SRS of 267 college women. Suppose(as is roughly true) that 70% of all college women have been on a diet within the past 12months. (a) What are the mean and standard deviation of the sampling distribution of the sample proportion ˆpin random samples of size 267? (b) Explain why, under these conditions, the sampling distribution of ˆpis approximately normal. (c) Using the normal approximation, find the probability that 76% or more of the women in...
3. A sample survey interviews an SRS of 267 college women. Suppose (as is roughly true)...
3. A sample survey interviews an SRS of 267 college women. Suppose (as is roughly true) that 64 % of all college women have been on a diet within the past 12 months. What are the mean and standard deviation of the sampling distribution for samples of 267 women? The mean of the sampling distribution, p = (+ 0.01) The standard deviation of the sampling distribution of p-hat = (+ 0.01) Use a Normal approximation to find the probability that...
You may need to use the appropriate appendix table or technology to answer this question. Although...
You may need to use the appropriate appendix table or technology to answer this question. Although studies continue to show smoking leads to significant health problems, 30% of adults in a country smoke. Consider a group of 250 adults. (b) What is the probability that fewer than 65 smoke? Use the normal approximation of the binomial distribution to answer this question. (Round your answer to four decimal places.) (c) What is the probability that from 80 to 85 smoke? Use...
8.9 According to the National Center for Health Statistics, as of 2012, it is estimated that...
8.9 According to the National Center for Health Statistics, as of 2012, it is estimated that 24% of adults in Missouri smoke. You wish to know the probability of selecting from this popula- tion a random sample of 30 people containing 8 or fewer smokers a. Use a statistical program to determine the exact probability of getting 8 or fewer smok- ers. (Hint: refer to section 5.4.) b. Now use the normal approximation of the binomial distribution to answer the...
Please answer this question/explain entirely thanks! 8.9 According to the National Center for Health Statistics, as...
Please answer this question/explain entirely thanks!
8.9 According to the National Center for Health Statistics, as of 2012, it is estimated that 24% of adults in Missouri smoke. You wish to know the probability of selecting from this popula- tion a random sample of 30 people containing 8 or fewer smokers. a. Use a statistical program to determine the exact probability of getting 8 or fewer smok- ers. (Hint: refer to section 5.4.) b. Now use the normal approximation of...
The mean height of women in a country (ages 20-29) is 63.5 inches. A random sample...
The mean height of women in a country (ages 20-29) is 63.5 inches. A random sample of 50 women in this age group is selected. What is the probability that the mean height for the sample is greater than 64 inches? Assume o = 2.85. The probability that the mean height for the sample is greater than 64 inches is (Round to four decimal places as needed.) The height of women ages 20-29 is normally distributed, with a mean of...
Using the simple random sample of weights of women from a data set, we obtain these...
Using the simple random sample of weights of women from a data set, we obtain these sample statistics: n = 50 and x = 153.98 lb. Research from other sources suggests that the population of weights of women has a standard deviation given by o = 30.56 lb. a. Find the best point estimate of the mean weight of all women. b. Find a 99% confidence interval estimate of the mean weight of all women. Click here to view at...
According to the Canadian Internet Use Survey conducted by Statistics Canada in 2018, 74% of Canadian seniors (65 and over) used the Internet on a daily or near-daily basis. A market researcher wishes to estimate, the current (Summer 2020) proportion of all Canadian seniors who use the Internet on a regular basis. (a) How large should the sample size be so that a 96 % confidence interval for the proportion of all Canadian seniors who use the Internet on a...
3. A sample survey interviews an SRS of 267 college women. Suppose (as is roughly true) that 64 % of all college women have been on a diet within the past 12 months. What are the mean and standard deviation of the sampling distribution for samples of 267 women? The mean of the sampling distribution, p = (+ 0.01) The standard deviation of the sampling distribution of p-hat = (+ 0.01) Use a Normal approximation to find the probability that...
8.9 According to the National Center for Health Statistics, as of 2012, it is estimated that 24% of adults in Missouri smoke. You wish to know the probability of selecting from this popula- tion a random sample of 30 people containing 8 or fewer smokers a. Use a statistical program to determine the exact probability of getting 8 or fewer smok- ers. (Hint: refer to section 5.4.) b. Now use the normal approximation of the binomial distribution to answer the...
Please answer this question/explain entirely thanks!
8.9 According to the National Center for Health Statistics, as of 2012, it is estimated that 24% of adults in Missouri smoke. You wish to know the probability of selecting from this popula- tion a random sample of 30 people containing 8 or fewer smokers. a. Use a statistical program to determine the exact probability of getting 8 or fewer smok- ers. (Hint: refer to section 5.4.) b. Now use the normal approximation of...
The mean height of women in a country (ages 20-29) is 63.5 inches. A random sample of 50 women in this age group is selected. What is the probability that the mean height for the sample is greater than 64 inches? Assume o = 2.85. The probability that the mean height for the sample is greater than 64 inches is (Round to four decimal places as needed.) The height of women ages 20-29 is normally distributed, with a mean of...
Using the simple random sample of weights of women from a data set, we obtain these sample statistics: n = 50 and x = 153.98 lb. Research from other sources suggests that the population of weights of women has a standard deviation given by o = 30.56 lb. a. Find the best point estimate of the mean weight of all women. b. Find a 99% confidence interval estimate of the mean weight of all women. Click here to view at...
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