Homework Answers
P1: False (True statement is: Null hypothesis is a statement that the value of a population parameter is equal to some claimed value and alternative hypothesis is reject the null hypothesis).
P2: False (Because uniform probability distribution is applicable to the scenarios where the set of possible outcomes can take on values in a discrete range (e.g. Natural number).
P3: False (If standard deviation is large then normal distribution will be shorter).
P4: True
P5: True (z-score=(raw score-mean)/SD)
P6: True
P7: True
P8: True
P9: False (99.7% of data will fall within 3 SDs of the mean)
P10: False (It is probability mass function)
P11: False
P12: True
P13: False (if p-value<0.05, we reject null hypothesis at 5% level of significance)
P14: True
P15: False (significance level is upper bound of this probability).
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The alternate hypothesis is a statement that the value of a population parameter (such as proportion,...
You conduct a hypothesis test about a population proportion p at a significance level of a...
You conduct a hypothesis test about a population proportion p at a significance level of a = .01 using a random sample of size n = 38. Your test statistic follows a standard normal distribution when the null hypothesis is true as an equality, and its value obtained from the sample is z = -2.75. Use the Distributions tool to help you answer the questions that follow. Select a Distribution Distributions 0 1 2 3 If you perform a lower...
3. Testing a population mean The test statistic (Chapter 11) Aa Aa You conduct a hypothesis...
3. Testing a population mean The test statistic (Chapter 11) Aa Aa You conduct a hypothesis test about a population mean u with the following null and alternative hypotheses: Ho: u-25.8 H1: <25.8 Suppose that the population standard deviation has a known value of a observations, which provides a sample mean of % 30.7. 17.8. You obtain a sample of n =62 Since the sample size large enough, you assume that the sample mean X follows a normal distribution. Let...
3. Hypothesis tests about a population mean, population standard deviation known Aa Aa Lenders tighten or...
3. Hypothesis tests about a population mean, population standard deviation known Aa Aa Lenders tighten or loosen their standards for issuing credit as economic conditions change. One of the criteria lenders use to evaluate the creditworthiness of a potential borrower is his credit risk score, usually a FICO score. FICO scores range from 300 to 850. A consumer with a high FICO score is perceived to be a low credit risk to the lender and is more likely to be...
2. Hypothesis tests about a population mean, population standard deviation known Aa Aa Lenders tighten or...
2. Hypothesis tests about a population mean, population standard deviation known Aa Aa Lenders tighten or loosen their standards for issuing credit as economic conditions change. One of the criteria lenders use to evaluate the creditworthiness of a potential borrower is her credit risk score, usually a FICO score. FICO scores range from 300 to 850. A consumer with a high FICO score is perceived to be a low credit risk to the lender and is more likely to be...
all part of one question please answer all. only answer please if our positive of the...
all part of one question
please answer all. only answer please if our positive of the
answer
4. Alpha level and the critical region Aa Aa The alpha level that a researcher sets at the beginning of the experiment is the level to which she wishes to limit the probability of making the error of rejecting the null hypothesis when it is true rejecting the null hypothesis when it is true not rejecting the null hypothesis when it is false...
2. Hypothesis tests about a population mean, population standard deviation known Lenders tighten or loosen their...
2. Hypothesis tests about a population mean, population standard deviation known Lenders tighten or loosen their standards for issuing credit as economic conditions change. One of the criteria lenders use to evaluate the creditworthiness of a potential borrower is her credit risk score, usually a FICO score. FICO scores range from 300 to 850. A consumer with a high FICO score is perceived to be a low credit risk to the lender and is more likely to be extended credit...
Suppose that the null hypothesis is true, that the distribution of the test statistic, say T,...
Suppose that the null hypothesis is true, that the distribution of the test statistic, say T, is continuous with cumulative distribution function F and that the test rejects the null hypothesis for large values of T. Let V denote the p-value of the test. a. Show that V = 1 − F(T). b. Conclude that the null distribution of V is uniform. c. If the null hypothesis is true, what is the probability that the p-value is greater than 0.1?
thank you!!!!! i will thumbs up correct answer Complete the statement. Acritical value is Choose the correct answer...
thank you!!!!! i will thumbs up correct answer
Complete the statement. Acritical value is Choose the correct answer below O A. Acritical value is the probability of obtaining a sample statistic like the one obtained from the sample or something more unusual il the null hypothesis is true. Acritical value is the number of standard errors (or standard deviations) to move from the mean of a sampling distribution to corespond to a specilied level of confidence O B. O C....
5. Testing the population mean when the population standard deviation is known Lenders tighten or loosen...
5. Testing the population mean when the population standard deviation is known Lenders tighten or loosen their standards for issuing credit as economic conditions change. One of the criteria lenders use to evaluate the creditworthiness of a potential borrower is her credit risk score, usually a FICO score. FICO scores range from 300 to 850. A consumer with a high FICO score is perceived to be a low credit risk to the lender and is more likely to be extended...
2. Hypothesis tests about a population mean, population standard deviation known Aa Aa Lenders tighten or...
2. Hypothesis tests about a population mean, population standard deviation known Aa Aa Lenders tighten or loosen their standards for issuing credit as economic conditions change. One of the criteria lenders use to evaluate the creditworthiness of a potential borrower is her credit risk score, usually a FICO score. FICO scores range from 300 to 850. A consumer with a high FICO score is perceived to be a low credit risk to the lender and is more likely to be...
You conduct a hypothesis test about a population proportion p at a significance level of a = .01 using a random sample of size n = 38. Your test statistic follows a standard normal distribution when the null hypothesis is true as an equality, and its value obtained from the sample is z = -2.75. Use the Distributions tool to help you answer the questions that follow. Select a Distribution Distributions 0 1 2 3 If you perform a lower...
3. Testing a population mean The test statistic (Chapter 11) Aa Aa You conduct a hypothesis test about a population mean u with the following null and alternative hypotheses: Ho: u-25.8 H1: <25.8 Suppose that the population standard deviation has a known value of a observations, which provides a sample mean of % 30.7. 17.8. You obtain a sample of n =62 Since the sample size large enough, you assume that the sample mean X follows a normal distribution. Let...
3. Hypothesis tests about a population mean, population standard deviation known Aa Aa Lenders tighten or loosen their standards for issuing credit as economic conditions change. One of the criteria lenders use to evaluate the creditworthiness of a potential borrower is his credit risk score, usually a FICO score. FICO scores range from 300 to 850. A consumer with a high FICO score is perceived to be a low credit risk to the lender and is more likely to be...
2. Hypothesis tests about a population mean, population standard deviation known Aa Aa Lenders tighten or loosen their standards for issuing credit as economic conditions change. One of the criteria lenders use to evaluate the creditworthiness of a potential borrower is her credit risk score, usually a FICO score. FICO scores range from 300 to 850. A consumer with a high FICO score is perceived to be a low credit risk to the lender and is more likely to be...
all part of one question
please answer all. only answer please if our positive of the
answer
4. Alpha level and the critical region Aa Aa The alpha level that a researcher sets at the beginning of the experiment is the level to which she wishes to limit the probability of making the error of rejecting the null hypothesis when it is true rejecting the null hypothesis when it is true not rejecting the null hypothesis when it is false...
thank you!!!!! i will thumbs up correct answer
Complete the statement. Acritical value is Choose the correct answer below O A. Acritical value is the probability of obtaining a sample statistic like the one obtained from the sample or something more unusual il the null hypothesis is true. Acritical value is the number of standard errors (or standard deviations) to move from the mean of a sampling distribution to corespond to a specilied level of confidence O B. O C....
5. Testing the population mean when the population standard deviation is known Lenders tighten or loosen their standards for issuing credit as economic conditions change. One of the criteria lenders use to evaluate the creditworthiness of a potential borrower is her credit risk score, usually a FICO score. FICO scores range from 300 to 850. A consumer with a high FICO score is perceived to be a low credit risk to the lender and is more likely to be extended...
2. Hypothesis tests about a population mean, population standard deviation known Aa Aa Lenders tighten or loosen their standards for issuing credit as economic conditions change. One of the criteria lenders use to evaluate the creditworthiness of a potential borrower is her credit risk score, usually a FICO score. FICO scores range from 300 to 850. A consumer with a high FICO score is perceived to be a low credit risk to the lender and is more likely to be...
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