Credit Score0-15Number of Applicants 7015-30 30-45254545-60 60-75 75-90 90+30 23 10 0Perform a goodness of fit test at the 5% significance level of the null hypothesisthat the observed credit scores follow an Exponential distribution.

The null and Alternative hypothesis are:- Ho : The observed credit scores follow an Exponential…

Answered: Credit Score 0-15 15-30 Number of…

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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Hypothesis test for a population proportion using the p value... Based on their records, a hospital claims that the proportion, p, of full-term babies born in the community that weigh more than 7 pounds is 44%. A pediatrician who works with several hospitals in the community would like to verify the hospital's claim. In a random sample of 175 babies born in the community, 89 weighed over 7 pounds. Is there enough evidence to reject the hospital's claim at the 0.01 level of significance? Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) (a) State the null hypothesis Ho and the alternative hypothesis H₁. HO H₁ :0 (b) Determine the type of test statistic to use. (Choose one) ▼ (c) Find the value of the test statistic. (Round to three or more decimal places.) 0 (d) Find the p-value. (Round to three or more decimal places.) 0 (e) Can we reject the claim that the…
Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 408 randomly selected adults showed that 61% of them would erase all of their personal information online if they could. Find the value of the test statistic. The value of the test statistic is _____. (Round to two decimal places as needed.)
5 Hypothesis Test It is conjectured that the proportion of all people who went trick-or-treating who also had a pumpkin carved into a jack-o'-lantern at their home is 0.62. Of interest is to test this claim versus the alternative that the proportion of all people who went trick-or-treating who also had a pumpkin carved into a jack-o'-lantern at their home is less than 0.62. A simple random sample of 270 people who went trick-or-treating is selected, and 162 of them also had a pumpkin carved into a jack-o'-lantern at their home (and the other 108 did not). If appropriate, use this information to test if the proportion of all people who went trick-or-treating who also had a pumpkin carved into a jack-o'-lantern at their home is less than 0.62 at the a = .10 level of significance. A simple random sample of 270 people who went trick-or-treating is selected, and 162 of them also had a pumpkin carved into a jack-o'-lantern at their home (and the other 108 did not). use this information to…
Runs Test If we use a 0.05 significance level to test for randomness, what are the critical values from Table A-10? Based on those values and the number of runs from Exercise 2, what should be concluded about randomness?
Chi-Square Analysis The National Sleep Foundation used a survey to determine whether hours of sleeping per night are independent of age. The following shows the hours of sleep on weeknights for a sample of individuals age 49 and younger and for a sample of individuals age 50 and older. Hours of sleep Fewer than 6 6 to 8 8 or more 49 or younger 44 42 28 50 or older 38 54 73 At the 10% level of significance, explore this dataset by performing the appropriate Chi-square test. 1. Compute for the value of the test statistic. Round off your final answer to the nearest thousandths. 2. What are the appropriate hypotheses? 3. What is the critical value in the decision rule? 4. What is the appropriate conclusion?
Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 582 randomly selected adults showed that 59% of them would erase all of their personal information online if they could. Find the value of the test statistic. The value of the test statistic is ____. (Round to two decimal places as needed.)
Sh/question/an-airline-offers-discounted-advance/ ADER SUBJECTS v Upper level math > Statistics question & answer logicfail2 Asked 2 yrs ago. An airline offers discounted "advance purchase " fares to customers who buy tickets more than 30 days before travel and charges "regular" fares for tickets purchased during those last 30 days. The company has noticed that 60% of its customers take advantage of the advance-purchase fares. The "no-show" rate among people who paid regular fares is 30%, but only 5% of customers with advance-purchase tickets are no-shows. a) What percent of all ticket holders are no-shows? b) What 's the probability that a customer who didn't show had an advance -purchase ticket? c) Is being a no-show independent of the type of ticket a passenger holds? Explain. 5.0 * 09 Sarah Schrijvers a) The percent of no-shows is the percent of no-shows of advance-purchase tickets increased by the percent of no-shows of advance purchase tickets: P(no-show) = 0.6 × 0.05+0.4 × 0.3…
Hypothesis Testing and Confidence Interval for a Population Mean Two years ago, the study showed that the mean price of all one-bedroom condos is 560 thousand dollars in a city. Since the mortgage rate is very low during the COVID-19 pandemic, economists believed that the mean price of one-bedroom condos will be continuously increasing. To support the claim, a random sample of one-bedroom condos is selected from the city during the COVID-19 pandemic, and their prices (in thousands of dollars) are shown below. 510 535 538 546 563 575 581 606 608 608 622 629 645 671 674 692 Part A – Suppose we want to test whether the claim is true or not. a. State the null and alternative hypotheses (symbolically). b. Calculate the test statistic and p-value for the hypothesis test. Assume the population standard deviation of the house prices is 50 thousand dollars. c. Interpret the p-value in the context of the problem. d. At the 5% significance level, what can you conclude?
TEST OF HYPOTHESIS
p value?
Hypothesis Testing with Proportion question Research at PCC indicates that 40% of students change their major area of study after their first year in a program. A random sample of 120 students in the Business Department revealed that 68 had changed their major area of study after their first year in a program. Has there been a significant decrease in the proportion of students who change their major after the first year in this program? Test at the 05 level of significance.
Test the claim that the proportion of people who own cats is larger than 70% at the 0.005 significance level.Based on a sample of 800 people, 73% owned catsThe test statistic is: ________ (Round to 2 decimals)The p-value is: _______ (Round to 2 decimals)

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Credit Score 0-15 15-30 Number of Applicants 70 45 30-45 45-60 60-75 75-90 90+ 25 30 23 10 0 Perform a goodness of fit test at the 5% significance level of the null hypothesis that the observed credit scores follow an Exponential distribution.