When conducting a chi-square test of independence in a contingency table, as the difference between observed frequency and expected frequency _______________, the probability of rejecting the null hypothesis increases. a) stays the same b) decreases c) increases d) goes to 0
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- review(4c): The following table summarizes the outcomes of a study that researchers carried out to determine if females expresses a greater fear of heights than males. Find the expected number of females who should express fear of heights if the variables are indepently related. Round your answer to the nearest whole number. Men Women expressed a fear of heights 68 109 did not express a fear of heights 94 89 (a) 80 (b) 93 (c) 87 (d) 97At a drug rehab center 34% experience depression and 31% experience weight gain. 16% experience both. If a patient from the center is randomly selected, find the probability that the patient (Round all answers to four decimal places where possible.) a. experiences neither depression nor weight gain. b. experiences depression given that the patient experiences weight gain. c. experiences weight gain given that the patient experiences depression. (round to 4 decimal places) d. Are depression and weight gain mutually exclusive? yes no e. Are depression and weight gain independent? no yesX4.2.27 Assigned Media v Question Help v 34% of working mothers do not have enough money to cover their health insurance deductibles. You randomly select six working mothers and ask them whether they have enough money to cover their health insurance deductibles. The random variable represents the number of working mothers who do not have enough money to cover their health insurance deductibles. Complete parts (a) through (c) below. 4 0.087 5 0.018 0.002 (Round to the nearest thousandth as needed.) (b) Graph the binomial distribution using a histogram and describe its shape. Choose the correct graph below. A. OB. OD. AP(X) AP(x) AP(x) AP(x) 4 6 Describe the shape of the histogram. Choose the correct answer below. O A. Skewed right O B. Symmetrical O C. Skewed left O D. None of these Click to select your answer and then click Check Answer. Clear All Final Check part remaining 10:39 PM O e a D 40) 2/9/2021 P Type here to search Home 立
- Monitors Chi-square analysis - Goodness of fit In the laboratory, a genetics student crossed flies with normal long wings to flies with mutant dumpy wings, which she believed was a recessive trait. In the F₁, all flies had long wings. In the F₂, the following results were obtained: 792 long-winged flies - 208 dumpy-winged flies The student tested the hypothesis that the dumpy wing is inherited as a recessive trait by performing x2 analysis of the F₂ data. (a) What ratio did the student hypothesis? (b) Did the x2 analysis support the hypothesis? (c) What do the data suggest about the dumpy mutation? TCL 10 SE DISPLAY GREATNESS Captions & Subtitles Notes 9 DHClaim: Most adults would erase all of their personal information online if they could. A software firm survey of 535 randomly selected adults showed that 55% 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.)Age Age Gender Under 40 40 or Older Total Male 12 2 14 Female 8 3 11 Total 20 5 25 The table above shows the distribution of age and gender for 25 people who entered a contest. If the contest winner will be selected at random, what is the probability that the winner will be either a female or 40 or older? 13/25 16/25 3/25 10/25
- At a drug rehab center 38% experience depression and 28% experience weight gain. 17% experience both. If a patient from the center is randomly selected, find the probability that the patient (Round all answers to four decimal places where possible.) a. experiences neither depression nor weight gain. b. experiences depression given that the patient experiences weight gain. c. experiences weight gain given that the patient experiences depression. (round to 4 decimal places) d. Are depression and weight gain mutually exclusive? O no O yes e. Are depression and weight gain independent? yes O no ооA recent survey by the New Statesman on British social attitudes asked respondents if they believe that inequality is too large. The survey found that 65% of the respondents do believe inequality is too large. In a sample of six British citizens, what is the probability that two believe inequality is too large? If required, round your answer to four decimal places.f (2) = In a sample of six British citizens, what is the probability that at least two respondents believe that inequality is too large? If required, round your interim calculations and final answer to four decimal places.P (at least 2) = In a sample of four British citizens, what is the probability that none believe inequality is too large? If required, round your answer to four decimal places.f (0) =Claim: Most adults would erase all of their personal information online if they could. A software firm survey of 595 randomly selected adults showed that 62% 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.)
- When using the t test, we reject H0 _________.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.)A food marketing institute found that 33% of households spend more than $125 a week on groceries. Assume the population proportion is 0.33 and a simple random sample of 476 households is selected from the population. What is the probability that the sample proportion of households spending more thatn $125 a week is less than 0.36? There is a _____________probability that the sample proportion of households spending more thatn $125 a week is less than 0.36. Round the answer to 4 decimal places.
