Good credit: The Fair Isaac Corporation (FICO) credit score is used by banks and other lenders to determine whether someone is a good credit risk. Scoresrange from 300 to 850, with a score of 720 or more indicating that a person is a very good credit risk. An economist wants to determine whether the mean FICOscore is lower than the cutoff of 720. she finds that a random sample of 40 people had a mean FICO score of 680 with a standard deviation of 90, Can theeconomist conclude that the mean FICO score is less than 720? Use the a=0.01 level of significance and the P-value method with the TI-84 Plus calculator.Part: 0 / 4Part 1 of 4State the appropriate null and alternate hypotheses.D-0H:This hypothesis test is a (Choose one) ▼test.Part 2 of 4Compute the P-value. Round the answer to at least four decimal places.P-value =Part: 2/ 4Part 3 of 4Determine whether to reject H(Choose one) ▼the null hypothesis H.Part 4 of 4State a conclusion.There (Choose one) v enough evidence to conclude that the mean FICO score is lower than the cutoff of 720.

*Answer: Given that Hypothesized Population Mean (\mu)(μ) = 720720 Sample Standard Deviation…

Answered: ate null and alternate hypotheses. O0…

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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I need help with stats/2023 A baseball team claims that the mean length of its games is more than 2.6 hours. STate H0 and Ha in words and symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed or 2-tailed test. Explain your reasoning. State the null hypothesis in words and symbols. Choose the correct answer A. The null hypothesis is expressed in words is, "the mean length of a baseball's team's games is at most 2.6 hours." The null hypothesis is expressed symbolically as, H0: mu < or = to 2.6" B. The null hypothesis is expressed in words is, "the mean length of a baseball team's games is not 2.6 hours." The null hypothesis is expressed symbolically as, "H0: mu does not = 2.6" C. The null hypothesis is expressed in words is "the mean length of a baseball team's games is 2.6 hours." THe null hypothesis is expressed symbolically as, "H0: mu = 2.6" C. The null hypothesis is expressed in words is "the mean length of a baseball's team's games…
Claim: Fewer than 93% of adults have a cell phone. In a reputable poll of 1234 adults, 83% said that they have a cell phone. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)
← An IQ test is designed so that the mean is 100 and the standard deviation is 14 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99% confidence that the sample mean is within 3 IQ points of the true mean. Assume that a = 14 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation. The required sample size is. (Round up to the nearest integer.) View an example Get more help - 2 F2 W S X дв mand 5373255.docx # 3 80 E D C $ 4 R F NO REF SAMPLE....pdf A % 5 V ♥ FS T G 6 B MacBook Air & D TEMPLATE Sel.....docx A Y H & 7 N F7 U 30 8 J DII FO 1 M ( 9 K resume..docx O : ... I d { + [ option = 11 I Check answer ? 1 Show All 41 : F:12 } 1 X delete
To study the effect of temperature on yield in a chemical process, five batches were produced at each of three temperature levels. The results follow. Source of Variation 50°C 60°C 70°C Treatments Error Total N 35 Temperature 25 37 38 30 70 29 206 30 276 33 23 Construct an analysis of variance table. (Round your values for MSE and F to two decimal places, and your p-value to four decimal places.) 30 24 27 28 29 Sum of Squares 32 Degrees of Freedom Ho: M50°C = μ60°C = μ70°C Ha: 50°C 60°C # μ70°C 2 12 O Ho: M50°C 60°C # μ70°C Ha: 50°C = 60°C = μ70°C 14 O Ho: Not all the population means are equal. Ha: 50°C = 60°C = μ70°C Ho: M50°C = μ60°C = μ70°C Ha: Not all the population means are equal. 35 Mean Square 17.16667 F Use a 0.05 level of significance to test whether the temperature level has an effect on the mean yield of the process. State the null and alternative hypotheses. O Ho: At least two of the population means are equal. Ha: At least two of the population means are different.…
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Hypothesis Testing Using a P-Value identify the claim and state Ho and Ha. find the standardized test statistic z. find the corresponding P-value. decide whether to reject or fail to reject the null hypothesis. interpret the decision in the context of the original claim.
You may need to use the appropriate technology to answer this question. A mail-order catalog firm designed a factorial experiment to test the effect of the size of a magazine advertisement and the advertisement design on the number of catalog requests received (data in thousands). Three advertising designs and two different-size advertisements were considered. The data obtained follow. Size of Advertisement Small Large 8 12 A 12 8 26 22 Design B 18 26 22 14 18 Use the ANOVA procedure for factorial designs to test for any significant effects due to type of design, size of advertisement, or interaction. Use a = 0.05.
The filling the sentence says "Reject or Fail to Reject" and "Sufficient or Not Sufficient" Please provide the answer for all the parts. Thanks in advance.
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ate null and alternate hypotheses. O0 D-0 test is a (Choose one) test. Round the answer to at least four decimal places. to reject Hg. the null hypothesis H. enough evidence to conclude that the mean FICO score is lower than the cutoff of 720.