**Math Review Course Effectiveness Analysis**A math teacher claims that she has developed a review course that increases the scores of students on the math portion of a college entrance exam. Based on data from the administrators of the exam, scores are normally distributed with a mean (μ) of 518. The teacher obtains a random sample of 2200 students, enrolls them in the review course, and finds that the mean math score of the 2200 students is 525 with a standard deviation of 113. Complete parts (a) through (d) below:**(a) State the null and alternative hypotheses.**- $H_0$: The null hypothesis represents the situation where the review course has no effect on the scores. It can be denoted as $H_0: \mu = 518$.- $H_1$: The alternative hypothesis represents the situation where the review course increases the scores. It can be denoted as $H_1: \mu > 518$.(Note: The placeholders next to $H_0$ and $H_1$ in the image are dropdown menus for selecting the appropriate symbols and values for forming the hypotheses.)In this context, the hypothesis testing will help determine whether the observed increase in mean scores (from 518 to 525) can be attributed to the review course rather than random chance. Further steps in the analysis would typically include calculating the test statistic, determining the p-value, and comparing it against the significance level to make a conclusion about the hypotheses.

The claim is new review course increases the scores of the students on a math portion of a college…

Answered: (a) State the null and alternative…

Math

Statistics

(a) State the null and alternative hypotheses. Ho: H:

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Examine the given statement, then express the null hypothesis Ho and the alternative hypothesis H1 in the symbolic form: (1) The mean weight of women who won a beauty pageant is equal to 120 lbs. (2) There are more then 97% of LBCC students have computers. (3( There are at least 50% of LBCC students have a job while studying>
Questions 1 and 2: Set up the Null and Alternative hypotheses to test the following claims: 1. A health insurance company wants to determine if more than 25% of U.S. residents have been to a hospital emergency room within the past year. State the null and alternative hypotheses. H0: HA: 2. A company makes canned clam chowder (a delicious New England tradition). On the label, the company claims that the chowder contains (on average) 3.5 grams of Total Fat per serving. A consumer group would like to test this claim is true. State the null and alternative hypotheses that you would use to test if the mean amount of Total Fat per serving differs from 3.5 grams: H0: HA:
Questions 1 and 2: Set up the Null and Alternative hypotheses to test the following claims: 1. A health insurance company wants to determine if less than 25% of U.S. residents have been to a hospital emergency room within the past year. State the null and alternative hypotheses. H0: HA: 2. A company makes canned clam chowder (a delicious New England tradition). On the label, the company claims that the chowder contains (on average) 3.5 grams of Total Fat per serving. A consumer group would like to test this claim is true. State the null and alternative hypotheses that you would use to test if the mean amount of Total Fat per serving differs from 3.5 grams: H0: HA:
Claim: A minority of adults would erase all of their personal information online if they could. A software firm survey of 554 randomly selected adults showed that 38% of them would erase all of their personal information online if they could. Complete parts (a) and (b) below. ... a. Express the original claim in symbolic form. Let the parameter represent the adults that would erase their personal information. (Type an integer or a decimal. Do not round.)
11
Q12 Justified answer asap to get a upvote
The proportion of the population in favor of a particular law was about 66%. It is believed that the current proportion of the population in favor of the law has decreased. To assess this, you collect a sample of n=340 people and 197 indicate being in favor of the law. We wish to test the claim that the proportion of the population in favor of the law has decreased. Symbolically, the claim would be expressed as the alternative hypothesis: Ha:p
9 12 18 The literature for a particular medical procedure says there is a 70% chance it is successful. A surgeon performing the procedure tells his patients that the proportion of procedures he performs that are successful is higher than that. In a random sample of 30 procedures performed by the surgeon, 24 were successful. Use the results of 75 simulations shown in the null distribution below to evaluate the surgeon's claim. 0.40 0.47 0.53 0.60 0.67 0.73 0.80 0.87 0.93 1
One of the advantages of understanding statistics is that you can apply the concepts to yourself. This is even easier to do during our present time because of the widespread use of wearables. Wearables are accessory devices or clothing with embedded technology that are worn by a person and used to provide feedback to the person wearing them. Examples include the Fitbit, which is worn on the wrist and gathers data such as number of steps walked, heart rate, sleeping time. Another example is Ambiotex's smart shirt which is designed for athletes and has sensors in the shirt to measure heart rate, anaerobic threshold, fitness and stress levels. There are other companies making similar products. Suppose that you are interested in the amount of sleep you get a night. Sleep is very important and there is evidence that many Americans do not get enough sleep. You hypothesize you get 6 hours of sleep a night. Using a wearable, you track your amount of sleep on 16 random nights. Test the…
11. The null and alternative hypotheses For each pair of hypotheses that follows, decide whether H₀ and H₁ are set up correctly as the null and alternative hypotheses for a hypothesis test. If so, select “Valid” from the drop down menu. If not, select “Invalid”. 1 H₀: μ = 76 2 H₀: M = 234 H₁: μ ≠ 76 H₁: M ≠ 234 Invalid 3 H₀: μ = 16 4 H₀: µ = 112 H₁: μ ≠ 16 H₁: µ ≠ 111 You evaluate the by assuming that it is true and testing the reasonableness of this assumption by calculating the probability of getting the results if chance alone is operating.
facing up. The student rolls the cube 100 times and lands with 6 facing up 20 times. The P-value for the test of the hypotheses, Hop-0.17 and H p>0.17, is 0.19. What is the correct conclusion given a=0.05? O Because the P-value is less than a=0.05, the student should reject Ho. O Because the P-value is less than a=0.05, the student should reject Ho. O Because the P-value is greater than a=0.05, the student should reject Ho: O Because the P-value is greater than a=0.05, the student should fail to reject Ho. Save and Exit Next Submit Mark this and return 23 $ & 3 4. 5 6. 7 8. y d f h k 60
10. The null and alternative hypotheses For each pair of hypotheses that follows, decide whether H₀ and H₁ are set up correctly as the null and alternative hypotheses for a hypothesis test. If so, select “Valid” from the drop down menu. If not, select “Invalid”. 1 H₀: M = 145 2 H₀: μ = 19 H₁: M ≠ 145 H₁: μ ≠ 19 3 H₀: μ = 324 4 H₀: µ = 59 H₁: μ ≠ 324 H₁: µ ≠ 66 You evaluate the by assuming that it is true and testing the reasonableness of this assumption by calculating the probability of getting the results if chance alone is operating.