on a sample of 180 textbooks at the store, you find an average of 106.02 and a standard deviation of 17. The point estimate is:  (to 3 decimals) The 90 %

Q: se the Normal model​N(95​,15​) for the IQs of sample participants.​a) What IQ represents the…

A: The mean is 95 and the standard deviation is 15.

Q: A student scores 80 in math which has a mean of 70 and standard deviation of 10. He also scores 85…

A: GivenStudent scores 80 in math with Mean(μ)=70standard deviation(σ)=10student scores 85 in english…

Q: Central Limit Theorem for Sums Suppose random samples of n = 38 are collected from an unknown…

A: Givensample size(n)=3Mean(μ)=60standard deviation(σ)=3

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A: Given data isMean(x)=47standard deviation(s)=9sample size(n)=17confidence interval=98%

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A: Obtain the 85% confidence interval to estimate percentage of all female students who would receive a…

Q: The average THC content of marijuana sold on the street is 10.2%. Suppose the THC content is…

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Q: According to a 2009 Reader's Digest article, people throw away approximately 11% of what they buy at…

A:

Q: Using The Chi-Square Distribution Table, find the values for  χ2left  and χ2right  of the following.…

A: a)Givenα=0.02n=24

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A: It is interpreted that, the study involves 70individuals (i.e., n sample size=70). And the sample…

Q: When building a multiple regression model, Im(Tip-Bill*Smoker, data=TIPS), the summary output is the…

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Q: At what percentile is the child's reading level (round final answer to one decimal place). b.…

A:

Q: majority roup and 2 were from a minority group. What is the probability that both grants will be…

A: Given A National Merit Scholarship award committee recently claimed that each of 5 grant…

Q: The mean number of heart transplants performed per day in a country is about five. Find the…

A: Solution Given That, The mean number of heart transplants performed per day in a country is about…

Q: Assume that when adults with smartphones are randomly selected, 41% use them in meetings or classes.…

A: Given: About 41% of adults use their smartphones in meetings or classes. 15 smartphone users are…

Q: Construct a grouped frequency distribution for the data. Use the classes 19-28, 29-38, 39-48, 49-58,…

A: Answer:

Q: Given are the set of Y (price) and X (demand) of a certain commodity. X- {9,7,8,9,3,2} and Y-…

A: Given that X Y X \cdot YX⋅Y X^2X2 Y^2Y2 9 6 54 81 36 7 5 35 49 25 8 7 56 64 49 9 6 54 81…

Q: 9) Use a probability tree: 85% of Americans have dental insurance. Of those that have dental…

A: Here, P(dental insurance) =0.85 P(no dental insurance ) =0.15 P( regular check up| insurance ) =0.68…

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Q: Based on a survey, assume that 31% of consumers are comfortable having drones deliver their…

A: From the above question The values of n is 6

Q: According to a company's website, the top 10% of the candidates who take the entrance test just been…

A: 10% of candidates take entrance test The reported mean and standard deviation is 69 and 8 μ=69σ=8

Q: Let S (x, y) = 4(x + y) 5x³ pdf with 14-16 then the value of A which make this probability true is…

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Q: i) expected return for Lilac ordinary share ii) Standard deviation of return for lilac ordinary…

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Q: In a survey, 26 people were asked how much they spent on their child's last birthday gift. The…

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Q: Why won't the whiteboard image show up?

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

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Q: number of components must fail before completing the 100 hours of work, considering that the…

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Q: In a test of a gender-selection technique, results consisted of 226 baby girls and 13 baby boys.…

A: The answer is attached below,

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Q: TABLE 15.5 An experiment was conducted to compare the strengths of two types of kraft papers: one a…

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Q: Below is a contingency table outlining the number of surveyed adults who use Snapchat. Use Snapchat…

A:

Q: 157 792 357 000 000 0.157 0.792 0.357 1.000 0.000 . . 0.644 0.278 0.500 0.204 1.000 0.644 0.278…

A: x1 x2 x3 x4 x5 x6 x7 x8 0.157 0.792 0.357 1 0 0.167 0.586 0.563 0.157 0.792 0.357 1 0 0.833…

Q: In the country of United States of Heightlandia, the height measurements of ten-year-old children…

A: Given,mean(μ)=55.8standard deviation(σ)=9

Q: A sample of 12 observations is selected from a normal population with a population standard…

A: Given that  Sample size n =12 Population standard deviation =6

Q: A consumer organization wants to estimate the actual tread wear index of a brand name of tires that…

A: Given that  Sample size (n) = 20 Sample mean (x¯) = 196.7 Sample standard deviation (s) = 16.4…

Q: statistics that are useful for answering Using the standard deviation, we would expect two thirds of…

A: Here the standard deviation is 1.248 ad mean is 1.11

Q: c. The 90th percentile for novels is (Round to the nearest word) d. The middle 80% of romance novels…

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Q: If 11 seeds are planted, what is the probability that exactly 4 don't grow?

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Q: INSTRUCTION: Classify the following researches based on the different types of research. (NO NEED…

A: Quantitative :   if information can be expressed in numbers. (something that can be counted)…

Q: The critical values separate the rejection region from the non-rejection region True False

A: Critical value:  Critical values are compared with test statistic to make decision about the null…

Q: 4. In a test designed to assess small motor coordination, kindergarten pupils are timed on their…

A: The question is about normal dist. Given : Popl. mean time required to complete the task ( μ ) = 36…

Q: Determine the P-value for a test of significance with t= -2.861, n = 20 and H₁ μ< 100. a

A: The given data is t=-2.861 n=20 Ha: μ&lt;100

Q: Suppose you have an experiment where you draw three cards (with replacement) from a standard deck of…

A: Dear student according to the guidelines we answer the first three subparts only. Solution Number of…

Q: An employee wants to retire and receive 5 000 a month. She wants to pass this monthly payment to…

A: The provided information is  A=5000 i=8%=0.08 The the formula for perpetuity is  P=AiA=the interest…

Q: A dataset has a mean of 48.1 and a standard deviation of 6.3. What is the z-score of the value 18.5,…

A: Solution  Given That, A dataset has a mean of 48.1 and a standard deviation of 6.3. What is the…

Q: Given the standard normal distribution, find ZZ such that P(z<Z)=0.988P(z<Z)=0.988

A: Given the standard normal distribution of P(z&lt;Z)=0.988

Q: e dotplot shows the body mass index (BMI) for 133 randomly surveyed people from a tain country. A…

A:

Q: predicting Al Ain secondary school students’ mental health scores via their scores in the life…

A: Given: Student Mental health score out of 50 Life- satisfaction score out of 100 1 40 80 2…

Q: What is the best estimate of the mean household income in this county?

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Q: picture is attached of disucssion 1   Please solve accurate  Question: State a claim that you would…

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Q: a. Find the probability that none of the selected adults say that they were too young to get…

A: GivenProbability say they were too young when they got their tatoos(p)=0.24sample size(n)=6Let "x"…