A hypothesis test is performed on the following where the claim is the null hypothesisHo:p = 0.74H :p+0.74a.) What population parameter is being tested?a. proportionb. standard deviationC. meand. varianceb.) What type of hypothesis test is being performed?a. left-tailedb. right-tailedc. two-tailed

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Answered: A hypothesis test is performed on the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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2. The mean wage per hour for all employees who work at a large company is $25.50 with a standard deviation of $6.75. Let ??̅be the mean wage per hour for a random sample of certain employees selected from this company. Find the mean and standard deviation of ??̅ for the following sample sizes: a) n=12 ??̅ = ??̅ = b) n=30 ??̅ = ??̅ = c) n=100 ??̅ = ??̅ = What happens to the values of ????̅ and ????̅ as the sample size increase?
What is stated by the null hypothesis for the chi-square test for independence? a. There is no relationship between the two populations regarding the two variables. b. Both variables have the same frequency distribution. c. The two variables have different frequency distributions. d. There is a relationship between the two populations regarding the two variables.
2.38 Baggage fees: An airline charges the following baggage fees: $20 for the first bag and $40 for the second. Suppose 50% of passengers have no checked luggage, 33% have only one piece of checked luggage and 17% have two pieces. We suppose a negligible portion of people check more than two bags. a) The average baggage-related revenue per passenger is: $ (please round to the nearest cent) b) The standard deviation of baggage-related revenue is: $ (please round to the nearest cent) c) About how much revenue should the airline expect for a flight of 100 passengers? $ (please round to the nearest dollar)
The standard deviation of a discrete random variableo is the positive square root of its: O a. median. O b. mean. O c. variance. O d. mode. NE DUS PAGE
It is a claim about a population characteristic that is initially assumed to be true. A. Alternative hypothesis B. Null hypothesis C. One-tailed Test D. Two-tailed Test
A car dealer at Acme Motors claims that the average price of cars on his lot is not equal to $13600$13600 . Assuming that the population is normally distributed and the population standard deviation is $1143$1143. Test the dealer's claim at a 0.1 significance level. a.) The null and alternative hypothesis would be: b.) The test is: a.)left tailed b.)two tailed C.) right tailed
In case of hypothesis testing in places where population variances are unknown and sample size is large (nl and n22 30), sample variances can be a good approximation of population variances. Which best describe this statement? Select one: O a. None of the choices O b. The statement is true c. The statement is false O d. Not enough data to support the statement O e. The statement is neither true nor false
The weekly expenditure on groceries of a random sample of 100 family households was recorded. It was estimated that the mean expenditure was approximately $240. With rising interest rates and petrol prices, it was anticipated that grocery expenditure might decrease. Which hypothesis test would you use to test this claim? 1.One tailed, one sample t-test 2.Two tailed, one sample t-test 3.One tailed, z-test 4.One-tailed Paired Samples t-test 5.Chi Square
2.38 Baggage fees: An airline charges the following baggage fees: $25 for the first bag and $35 for the second. Suppose 54% of passengers have no checked luggage, 34% have only one piece of checked luggage and 12% have two pieces. We suppose a negligible portion of people check more than two bags. a) The average baggage-related revenue per passenger is: $ (please round to the nearest cent) b) The standard deviation of baggage-related revenue is: $ (please round to the nearest cent) c) About how much revenue should the airline expect for a flight of 120 passengers? $ (please round to the nearest dollar)
Answer the following questions on the F test statistic. Complete parts (a) through (d) below. a. If s represents the larger of two sample variances, can the F test statistic ever be less than 1? 2 $2 OA. Yes, because the ratio will always be less than 1. $₁ O B. No, because the ratio O C. No, because the ratio will always be greater than 1. 2 S₁ 2 1 will always be greater than 1. $2 2 1 O D. Yes, because the ratio will always be less than 1. $2
Answer the following questions on the F test statistic. Complete parts (a) through (d) below. a. If s represents the larger of two sample variances, can the F test statistic ever be less than 1? O A. No, because the ratio will always be greater than 1. S1 2 $₁ O B. Yes, because the ratio will always be less than 1. $2 1 O C. No, because the ratio will always be greater than 1. $2 2 $2 O D. Yes, because the ratio will always be less than 1. 2 $1 b. Can the F test statistic ever be a negative number? O A. No, because sample variances cannot be negative, and the result of dividing the squares of two nonnegative numbers is never negative. O B. Yes, because the numerator and denominator used to calculate the F test statistic can both take on negative and positive values. O C. No, because sample variances are always negative and the result of dividing the squares of two negative numbers is never negative. OD. Yes, because scan take on values from - 1 to 1 inclusive. c. If testing the claim…
Q5. Diamond and Lauren are looking at data from two groups. Diamond decides to run her analysis using a two-tailed test, whereas Lauren uses a one-tailed test. Who is more likely to commit a Type I error? A.) They're equally likely B.) Lauren C.) Not enough information to answer D.) Diamond Q6. Which of the following are assumptions of an independent samples t-test? A.) heterogeneity of variance; independence B.) heterogeneity of variance; nonnormality of distributions C.) homogeneity of variance; dependence D.) homogeneity of variance; normality of distributions Q7. If I want to know the probability of a coin landing on heads, so I flip the coin 100 times and record what it lands on, I'm using which view of probability: A.) Analytical B.) Subjective C.) Frequentist D.) Computational

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