An engineer is determining if the bolts she designed are being manufactured with accurate measurements. She sampled 60 bolts, which had an average length of 42 mm and standard deviation of 2 mm. Find the margin of error at a 95% confidence level and the 95% confidence interva

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A: Given: Observed table (Oi):

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Q: 3. In genetic investigations, one frequently samples from a binomial distribution. Except that…

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A: It is given that the mean is 43256 and standard deviation is 3150.

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Q: A simple random sample of size n = 64 is obtained from a population that is skewed right with μ = 84…

A: Given that ; Sample size (n) = 64 u = 84 ? = 8 By using the standard normal distribution and central…

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A: As per our company guidelines we are supposed to answer only first question. Kindly repost other…

Q: An urn contains red balls and blue balls. Let p represent the proportion of red balls. We would like…

A: Given: Let p represent the proportion of red balls. H0:p=0.5 Sample size n=10 The null hypothesis is…

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A: Hello thank you for the question. According to our honor code can answer only three sub parts at a…

Q: Average daily demand (normally distributed) = 150 Standard deviation = 0 = 16 Average lead time 5…

A: Given that: Average daily demand, d¯=150 Standard deviation, σd=16 Average lead time, L¯=5 Standard…

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A: Formula : Test statistic

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A: Given:The given information is the statements are given based on the test of two way ANOVA.We have…

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A: Given: To test whether  consuming stimulant affects grades or not. 2 groups are made on the basis of…

Q: Ocho

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Q: What is the critical value zalpha/2 that corresponds to 86% confidence level?

A: Here given  Confidence level = 86% So alpha = 1 - 0.86 = 0.14

Q: find the expected number of people who will show up. Group of answer choices 850 1700 170 1830 300

A: It is given that the random variable X i.e, to show up follows Binomial distribution with parameter…

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Q: determine the proportion who smoke marijuana. It is observed that 150 smoke marijuana. Calculate a…

A: It is given that  Favourable cases, X = 150 Sample size, n = 200 Sample proportion, p^ = X/n

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A: Suppose X~N(-3,4).  So Mean = -3 Variance  = 4  Standard deviation  = 2

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A: Sleep plays an important role for a good health  Sufficient sleep refreshes your mind and it regains…

Q: With 4 tosses, you get a head on the first toss and a tail on the last toss?

A: here given ,  probability of head  = p = 2/3  probability of Tail = q = 1/3

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Q: 2a) Using calculator find the following probabilities: i) P(-0.60 ≤z≤ 0) 0.2257 -0.2257 0.7743…

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Q: An advertising firm has decided to ask 110 customers at each of four local shopping malls if they…

A: Given  Total no of customers=110 No of malls=4 Significance level=0.05 We need to determine the…

Q: 2.85 The probability that a doctor correctly diag- noses a particular illness is 0.7. Given that the…

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A: From the above question  Setting the confidence level at 90% instead of 95% The correct option is…

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A: Given, Population proportion p=0.81 n=454 x=360 significance level of α=0.001.

Q: DIRECTIONS: Match each player to the boxplot that represents the data for the number of points the…

A: According to policy we supposed to answer 3 part kindly repost for remaining.

Q: 2b) Find zo for the following probabilities: Zo ii) P (z ≤ Zo) = 0.30 0.52 0.12 0 -0.52

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Q: An instructor recorded the following number of correct items (in a quiz with 10 questions) for the…

A: Level of measurement : It is used to describe information with in the values. Four types of level of…

Q: Salaries of 44 college graduates who took a statistics course in college have a mean, x, of $69,200.…

A: Here, n=44, x=69,200, and σ=10,204. As confidence level is given as 99%, the value of α=0.01.

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A: Given, It is beneficial to be able to estimate the weight of a tree based on measurement of the tree…

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A: Parametric test are used to study the population when the size is larger by taking sample. If the…

Q: An experiment consists of flipping a coin and then rolling a die. What is the probability of…

A: Flipping a coin and a die  Sample space = S  S = ( T1 , T2 , T3 , T4 , T5 , T6 , H1 , H2 , H3 , H4 ,…

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Q: In an experiment, die is rolled continually until a 6 appears, at which point the experiment stops.…

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Q: 3. In genetic investigations, one frequently samples from a binomial distribution. Except that…

A: Given Information: Consider the given function:

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A: We have given that  X ~ N (µ, σ )= N(10, 2)

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Q: Please use the accompanying Excel data set or accompanying Text file data set when completing the…

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Q: If you chose to compute a mean for a variable, which measure of variability would you most likely…

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Q: Express the confidence interval (0.022,0.120) in the form of p-E<p<p+E. <p<(Type integers or…

A: The given proportion CI of (0.022, 0.120) may be interpreted as, "with some defined surety level,…

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Q: A factorial experiment involving two levels of factor A and three levels of factor B resulted in the…

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Q: Since an instant replay system for tennis was introduced at a major tournament, men challenged 1390…

A: Given:   MEN WOMEN x 417 230 n 1390 745 proportion,p^=x/n p̂1 = x1/n1=417/1390=0.3000…

Q: What is the probability it will take him more than 1020 shots to hit it? f. What is the expected…

A: here given ,  A novice marksman is shooting at a target 1000 feet away. The probability of his…

Q: A custodian wishes to compare two competing floor waxes to decide which one is best. He believes…

A: Formula : Test statistic :

Q: One strategy that may have an impact on employee​ retention, turnover and engagement is a successful…

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Q: You work for the U.S. Food and Drug Administration. You have gotten word that a drug manufacturing…

A: Solution: n= 20 Sample size  x =∑xn=702420=351.2 Sample mean s=∑(x-x)2n-1s= 5.7820 Sample standard…