A medical doctor claims that 40% of the patients utilize health insurance, but a social worker thinks that this proportion may be is too high. In a sample of 12 medical bills, 4 were partially covered by health insurance, what can we conclude at 0.05 level of significance. What is the summation of x and decision? Select one: a. .225, Ho Accepted b. .225, Ho Rejected c. 1.225, Ho Accepted d. 1.225, Ho Rejected

Q: From past experience, a teacher believes. score on an exam is 75. A sample of 20 follows: 78, 75,…

A:

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: Given, Nationally, 83% of Americans have earned a high school diploma.  We want to see if the…

Q: A psychologist claims that students are more attentive in classes taught by instructors rated as…

A: Given that  Based on the data given it is related to two sample proportion for hypothesis test The…

Q: The college Physical Education Department offered an Advanced First Aid course last quarter. The…

A: Givenz-scores of students isSue=-1.30Bill = -0.92mary = 0.00Mark =2.65Ben = 2.04Sam = -1.59

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: α=0.01 Sample size, n1=323 No. of people dream in black and white, x1=73 Sample size, n2=315 No. of…

Q: The Bangor Humane Society tracks cat adoptions closely, and in the past has seen 60% of people who…

A: We know if we have sample size n and number of success is X then, proportion of success is    p^ =…

Q: Now, suppose that the agronomist is also interested in how a particular type of fertilizer, in…

A: (d). Identify the experimental units in the study: The agronomist is interested to test how a…

Q: When two births are randomly se- lected, the sample space for genders is bb, bg, gb, and gg (where b…

A: This question examines the sampling distribution of the sample proportion of girls from two births.…

Q: The mean number of eggs per person eaten in the United States is 272. Do college students eat more…

A: In order to determine whether the average number of eggs eaten by college students per person is…

Q: Imagine an experiment with a factor that has 9 levels (e.g., coffee made with coffee beans from 9…

A: We have given that  MS(factor) = 40.0 MS(residual) = 10.0.

Q: . What is the probability that a student will neither do homework regularly nor will pass the ourse?…

A:

Q: Would this be a t-test because the sample is less than 30?

A: From the given information, the population standard deviation is 2.

Q: Suppose that in a large class, the instructor announces that the average grade on an exam is 75.…

A: According to the definition of estimation, a sample mean is equal to the population mean.

Q: ents, the proportion p who say they're interested in their congressional district's election results…

A: Answer  X =196 n =270 alpha =0.01 This is one -tailed test [or] Right -tailed test.

Q: A survey of 800 randomly selected recent degree recipients found that 155 received associate…

A: Number og degree reciepents in the survey=800associate degrees recieved reciepents=155Bachelor…

Q: Suppose that data are collected from a random sample of 48 male students and 91 female students at a…

A:

Q: The averrage gasoline prrice at Chevvron was $3.12 per gallon lastt month. Due to the recent…

A: Given,  Sample size = n = 36 Sample mean = x¯ = 3.06 Population standard deviation = σ = 0.12 The…

Q: A mayor running for re-election claims that during his term, average municipal taxes have fallen by…

A: Null Hypothesis is a neutral statement about the parameter or distribution. Alternative hypothesis…

Q: Among college students, the proportion p who say they're interested in their congressional…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: In June of 1997, Australians were asked if they thought unemployment would increase, and 52%…

A: Given Information : In June of 1997, Australians were asked if they thought unemployment would…

Q: Please answer number 13.

A: It is given that 43% had no children, 18% are had one child, 18% are have two children, 21% have…

Q: According to a census company, 7.1% of all babies born are of low birth weight. An obstetrician…

A: Here we conduct Z test for proprtion.

Q: c. The test statistic (z v = (please show your answer to 3 decimal places.) d. The p-value = (Please…

A: We have to find test statistics and p value..

Q: An article reports that in a sample of 124 nurses, 51 said that a busy workload had a positive…

A:

Q: A poll asked college students in 2016 and again in 2017 whether they believed the First Amendment…

A: It is given that-Number of students surveyed in 2016:People who believed the claim: Number of…

Q: A mayor running for re-election claims that during his term, average municipal taxes have fallen by…

A:

Q: Of 200 youthful gamers (under 18) who tried the new Z-Box-Plus game, 120 rated it "excellent,"…

A: For the gamer aged "under 18":The sample size, n1=200.The sampled number of gamers, who rated it…

Q: The averrage gasoline prrice at Chevvron was $3.12 per gallon lastt month. Due to the recent…

A: Given: μ=3.12n=36x¯=3.06σ=0.12α=5%=0.05

Q: In a random sample of 40 patients undergoing a standard surgical procedure, 14 needed pain…

A: Now use the Z-score for a 95% confidence level, which is approximately 1.96:CI = (p1 - p2) ± Z *…

Q: What is Ha? (H0 is the mean VIQ scores for the younger, middle-aged, and older subjects are all not…

A: Given the Null Hypothesis : H0 : is the mean VIQ scores for the younger, middle-aged, and older…

Q: As chairperson of the Rogers County Task Force on Aging, you wish to estimate the proportion of…

A: Sample size n =44 Favorable cases x =22 Sample proportion p^=x/n  =22/44 =0.500

Q: In a test of the quality of two television commercials, each commercial was shown in a separate test…

A: a)

Q: According to the Pew Research Center, the proportion of the American population who use only a…

A: Given that n = 30 x = 16 α=0.10Given claim : proportion greater than 0.37The claim is either the…

Q: A study was conducted to determine the proportion of people who dream in black and white instead of…

A: There are two independent samples which are over 55 and under 25. We have to test whether the…

Q: The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.25…

A: Given,n=1908x=439p^=xnp^=4391908=0.2301

Q: Can you conclude that the proportion of boys who are overweight differs from the proportion of girls…

A: Here use  proportion test for 2 sample

Q: Suppose that in a survey of 1,000 U.S. residents, 721 residents believed that the amount of violent…

A: From the provided information, Number of residents = 1000 721 residents believed that the amount of…

Q: Sebastian throws 850 pitches, of which 782 are strikes. To a 1% level of significance, is he right…

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Q: Suppose that an anxiety measure has a mean of 106 and SD of 20. The researcher only wants to work…

A:

Q: What is Ha?

A: (H0 is the mean VIQ scores for the younger, middle-aged, and older subjects are all not different…

Q: A mayor running for re-election claims that during his term, average municipal taxes have fallen by…

A: A statistical hypothesis is an assumption or a statement about the population parameter. Hypothesis…