The mean SAT score in mathematics is 543. The founders of a nationwide SAT preparation course claim that graduates of the course score higher, on average,than the national mean. Suppose that the founders of the course want to carry out a hypothesis test to see if their claim has merit. State the null hypothesis Hoand the alternative hypothesis H, that they would use.H: 0H¡: 0O

Given : Claim : Graduates of the course score higher, on average, than the national mean.

Answered: The mean SAT score in mathematics is…

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.) A packaging company advertises that their product weighs on average 16 oz. You feel the box is much lighter than this, so you run a hypothesis test. a.) State the hypotheses. b.) What would be a type l error in this situation? c.) How could you decrease your chance of making a type I error? d.) What would be a type II error in this situation?
A Maps egnu A survey was conducted that asked AHC (Population 1) students and Cuesta students if they drive to school. The calculator output from a hypothesis test looks like this: 2-PropZTest Pi # p2 Z = 2.8 p = 0.006 Pi = 0.65 ng Online p2 = 0.73 ve p = 0.682 cover a. What was the claim? m Proctor O AHC students are more likely than Cuesta students to drive to school OA higher number of AHC than Cuesta students drive to school O On average, the same number of AHC students and Cuesta students drive to school oom O AHC and Cuesta students are equally likely to drive to school b. Was the test statistically significant at a = 0.05? O No, since 0.006 > 0.05 O No, since 0.682 > 0.05 O Yes, since 0.006 0.05 c. What percentage of the AHC students drive to school? d. What is the combined percentage of AHC and Cuesta students that drive to school?
A decade-old study found that the proportion of high school seniors who felt that "getting rich" was an important personal goal was 72%. Suppose that we have reason to believe that this proportion has changed, and we wish to carry out a hypothesis test to see if our belief can be supported. O State the null hypothesis H, and the alternative hypothesis H, that we would use for this test. Ho: 0 H: 0 O0 O20 O=0 ?
A store owner wanted to determine if more than 5% of customers made a purchase after he sent out a text. He sent out 300 texts to 300 randomly selected customers. Out of those 300, 17 made purchases. Is this evidence that if he sent out texts to all of his customers more than 5% would make purchases? What is the appropriate null and alternative hypothesis? Ho: p= 0.05 Ha: p> 0.05 O Ho: phat = 0.05 Ha: phat > 0.05 O Ho: p= 0.056 Ha: p > 0.056 O Ho: mu = 0.05 Hla: mu > 0.05
State the null and alternative hypothesis of the following: 1. The IQ of Harvard students is not 175. Identify whether the following uses a one-tailed or two-tailed test: why? a) The average height of students under the program BS Chemical Engineeriny is greter than 165 cm. b) The IQ of Harvard students is not 175. 2.
Choose the correct NULL hypothesis for the given scenario. The school board is wondering about pedestrian safety in the school zone. They conduct a study to determine whether or not traffic moves at the posted limit of 25 miles per hour during the school day. A. ?≠25μ≠25?≠25μ≠25 B. ?=25μ=25?=25μ=25 C. ?⎯⎯⎯=25x¯=25?⎯⎯⎯=25x¯=25 D. ?⎯⎯⎯≠25
A hospital claims that the proportion of full-term babies born in the hospital who weigh less than seven pounds is no more than 44%. Suppose that we want to carry out a hypothesis test for this claim, suspecting otherwise. State the null hypothesis Ho and the alternative hypothesis H, that we would use for this test. Ho: 0 H: ] Aa OSO
Suppoose the p-value for a hypothesis is 0.0305. Using a 0.05, what is the appropriate conclusion? A. Reject null hypothesis B. Fail to rehect the null hypothesis C. Reject the alternative hypothesis D. Fail to reject the alternative hypothesis Answer correctly.
It is clairmeu that the proportion of high school students in the United States who use computers for educational purposes is at most 72%. Suppose that we have reason to believe otherwise and wish to carry out a hypothesis test for this claim. State the null hypothesis H, and the alternative hypothesis H, that we would use for this test. H, :0 H, :0 O
A survey found that 55% of college professors believe that their online education courses are as good as or superior to courses that use traditional face-to-face instruction. Give the null hypothesis for testing the claim made by the survey. ... Ho: p (Type an integer or a decimal.)
Perform an appropriate hypothesis test to answer the above research question. What is the Null Hypothesis H0. Ho:
According to a recent census, 14.3% of all housing units in a certain country are vacant. A county supervisor wonders if her county is different from this. She randomly selects 893 housing units in her county and finds that 162 of the housing units are vacant. Complete parts a through d below. a) State the hypotheses. Let the proportion of housing units in the county that are vacant be denoted by p. Choose the correct answer below. OA. Ho: p<0.143 HA: P = 0.143 O C. Ho: p=0.143 HA: P<0.143 OB. Ho: p=0.143 HA: P = 0.143 O D. Ho: p20.143 HA: P<0.143 b) Name the model and check appropriate conditions for a hypothesis test. What kind of test is this? Choose the correct answer below. Two-proportion t-test Difference in proportions test Proportional t-test O One-proportion z-test Check the appropriate conditions for a hypothesis test. Select the correct choice below and fill in the answer boxes within your choice. (Round to one decimal place as needed.) successes and nqo = than 10. OA. The…

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