assume that 400 births are randomly selected. Use subjective judgment to determine whether the given outcome is unlikely, and also determine whether it is unusual in the sense that the result is far from what is typically expected. 9. Exactly 205 girls. 10. Exactly 380 girls.

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A: Stating the appropriate null and alternative hypotheses: The hypotheses are given below: Null…

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A: We have to find proportion for given data.

Q: Draw and fill out a Venn diagram to represent the results of the survey and fill in each section.

A:

Q: A researcher wishes to estimate the number of households with two cars. How large a sample is needed…

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Q: A survey taken in 1994 stated that 52% of parents with high school aged children felt their children…

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A: Statistical significance Statistical significance is the statement that the results of a collection…

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Q: In a recent poll, 530 people were asked if they preferred cats or dogs. 59% said they preferred dogs…

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Q: The mean waiting time at the drive-through of a fast-food restaurant from the time an order is…

A: Given: Sample size n = 10 Population mean μ = 87.5   Formula Used: Test-statistic t = X-μsn

Q: The mean weekly salary of 9 teachers in a school is $1,000. If the school has 9 teachers and 11…

A: SOLUTION-

Q: A certain medicine is said to be 79% effective in giving relief to people with allergic reactions to…

A: Solution: Given information: n= 190 Sample size  x = 133  p^=xn=133190=0.70  Sample proportion . p =…

Q: (b) If the sample size were 205 rather than 175, would the margin of error be larger or smaller than…

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Q: a. Explain what it would mean to make a type I error. Choose the correct answer below. A. A type I…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: n analyst stated that the average amount of money spent on New Year gifts for friends is above…

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Q: A middle school has 250 students. Jenny surveys a random sample of 50 students and finds that 15 of…

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Q: Workplace Attire In a survey conducted by Opinion Research Corporation, 1000 adults were asked to…

A: a)The ‘percentage or %’ represents ‘divide by 100’.

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A: We conduct Z test for one proportion.

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A: The given information is about the waiting time at a restaurant with the sample size 10 orders.

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Q: You take a random sample of 500 people and 125 have cats (having cats is considered a success).…

A: Given data,n=500x=125p=?

Q: Does the mean of this sample equal 98.6, the number that is generally considered the average body…

A: Given data: 97.6, 98.8, 98.0, 97.0, 99.2, 98.6, 98.4, 97.4 We have to check mean of this sample…

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Q: A veterinarian wishes to test dogs colorblindness. She puts dog food in 3 different color bowls and…

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A: Given: Sample size, n is 1280 The number of respondents believed that Facebook act inappropriately,…

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Q: The mean of 16 items was found to be 30. On rechecking, it was found that two items were wrongly…

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Q: Suppose we wish to test Ho: μ ≤ 53 vs Ha: μ > 53. What will result if we conclude that the mean is…

A: Ho: μ ≤ 53 vs Ha: μ > 53 we conclude that the mean is greater than 53 and true value of the mean…

Q: B. The average exam score for 10 students in a statistics class was 85. One student dropped the…

A: Given When n=10, average exam score for 10 students in a statistics x̄=85  When one student dropped…

Q: A software company is interested in approving customer satisfaction rate from the 60%currently…

A: Given ,population proportion (P)=0.60Sample size (n)=245And X=156Sample…

Q: In a Gallup poll of randomly selected adults, 66% said that they worry about identity theft. For a…

A: Given that, 66% said they worry 34% said they dont worry, p=0.34 n=1013 Mean=?

Q: 16 In a survey about people's relationship with their pets, one of the questions asked if the person…

A: Here we have two categorical variable and we want to decide if the feeling of being guilty about…

Q: A survey found that 21% of Americans watch the fireworks on the 4th of July from their TV.  If 80…

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Q: Globally, 35% of all ridged brittleshell tortoises have spots on their shells. A herpetologist in…

A: According to guidelines we solve first question only when given questions are different.

Q: b. In a Pew Research Center poll on driving, 58% of the 1182 respondents said that they like to…

A: Step 1. (b) Total number of respondents is study =1182.

Q: A store is instructed by corporate headquarters to put a markup of 43​% on all items. An item…

A: Here we will find correct selling price and manager's error,

Q: A recent poll of Ms. Vergara's 160 students revealed the following.  They were asked if they did or…

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Q: One sample has a mean of M=5 and a second sample has a mean of M=10. The two samples are combined…

A: Given that, sample 1 has mean = 5 and sample 2 has mean =10.

Q: ate whether you think the difference between what occured and what you would expect by chance is…

A: When we draw a card randomly from a deck the probability of getting a certain card is 1/52 and as…

Q: An education researcher claims that at most 5​% of working college students are employed as teachers…

A: a) Denote p as the true proportion of working college students, who are employed as teachers or…