The final grading weights for a certain class and the scores for a student is given below.   Category Weight Score Exam 1 18% 91.78 Exam 2 18% 62.18 Exam 3 18% 75.37 Exam 4 18%   Homework 18% 93.92 Attendance 10% 87.52 What score on Exam 4 will lead to a 75 for a final grade?

Q: Ho : μ > 20 Ha: μ < 20 ΛΙ

A: A sample of 40 with mean is 19.5 and the population SD is 1.8 n=40x=19.5σ=1.8

Q: 3. Calculate the coefficient of skewness of the following frequency distributions, given their…

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Q: The following table shows ceremonial ranking and type of pottery sherd for a random sample of 434…

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

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Q: Mary took 4 courses last semester: Biology, Calculus, Spanish, and History. The means and standard…

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Q: Respondent University Graduate Non-Graduate Total A: Smoker 14 26 40 B: Non-smoker 6 4 10 Total 20…

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Q: 1. c) southwestern variable. The daily fuel consumption by a fleet of buses serving a large city is…

A: Here Given Variable is  The daily fuel consumption by a fleet of buses

Q: In a scatter diagram of the data of 50 participants, how many points are plotted?       A. 5…

A: The scatter diagram consists of 50 participants.

Q: You wish to test the following claim (H) at a significance level of a = 0.05. Ηο: μ = 79.2 Ha: 79.2…

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Q: Part C, D and E please, Thank You! D) What is the null hypothesis? E) Reject the null hypothesis…

A: According to the given information in this question We need to solve C ,D and E

Q: On January 3, Pronghorn Corp. purchased three portable electronic keyboards for $590 each. On…

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Q: Consider the following hypothesis test: A sample of 140 is used and the population standard…

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

Q: A sample of size = 41 has sample mean = 59 and sample standard deviation 5 - 7.1. Part: 0 / 2 Part 1…

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Q: The number of messages that arrive at a Web site is a Poisson distributed random variable with a…

A: GivenA mean of 6 messages per hourλ=6 per hourLet "x" be the no.of messages are received…

Q: Brand A Brand B 35 50 25 55 22 62 38 68 40 57 28 70 The prices of two different brands of…

A: Given data: Brand A 35 25 22 38 40 28 Brand B 50 55 62 68 57 70

Q: Use the t-distribution and the given sample results to complete the test of the given hypotheses.…

A: From the provided information,

Q: The error of the confidence interval is given by za/2 or to/2 depending on if o is known. Note: The…

A: Hi there! Since there are multiple subparts we will solve the first three subparts for you. To get…

Q: p(4) = Write an integer or decimal

A: Here given discrete probability distribution of X Here use rule , Total probabilityalways equal to 1

Q: Step-by-step software procedure for summary in MINITAB software is as follows: • Choose Stat >>…

A: The data is as follows: Los angeles office rental rates Dallas office rental rates 51 18 47…

Q: Use the normal distribution and the given sample results to complete the test of the given…

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Q: Consider the following hypothesis test: A sample of 150 is used and the population standard…

A: We have given that The null and alternative hypothesis are H0 : µ ≥ 62H1: µ &lt; 62 Population mean…

Q: How much do you study? A survey among freshmen at a certain university revealed that the number of…

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Q: You wish to test the following claim (H) at a significance level of a = 0.01. H₂:μ = 62.9 Ηα:μ #…

A: Given data , n= 7 M= 70 SD= 13.6 Level of significant /  Alpha =  0.01 We have to find out test…

Q: A set of measurements X has a mean of 7 and standard deviation of 0.2 for simplicity, a linear…

A: Mean of X = 7 Standard deviation of X = 0.2 Linear transformation Y = a X  + b Mean of Y = 1…

Q: DDonuts claims that the waiting time of customers for service is normally distributed with a mean of…

A: Parametric test are one of the hypothesis test. It used to make conclusion about the larger…

Q: The random variable X has a binomial distribution with n - 10 and p-0.04. Determine the following…

A: Given: X~B(n=10,p=0.04) we have to find following probabilities   a) P(X=5) b) P(X≤2) c) P(X≥9) d)…

Q: Deviation value of (Y-Y') for the data is zero. Explain the meaning of this occurence.

A: Residual variance is the variance in a model that cannot be explained by the variables in the model.…

Q: 99.7% of area For parts (a), (b), and (c), convert the x intervals to z intervals. (For each answer,…

A: It is given that Mean = 27.1 and SD = 4.0 The z score is defined as Z = (X - mean)/SD Note :…

Q: The owner of a small pet supply store wants to open a second store in another city, but he only…

A: The following information has been given: The sample size is n=150. The favorable cases are x=64.

Q: The General Social Survey is an annual survey given to about 1500 U.S. adults selected at random. A…

A: The question is about hypo. testing for difference between two popl. prop. Given : No. of college…

Q: The relative frequency table that corresponds with the above table. Grade on Statistics Exam…

A: The relative frequency can be calculated as R.f = frequency/Total Total = 66 + 77 + 66 + 1818 + 1414…

Q: Here is a bivariate data set. Find the regression equation for the response variable y. X y 70.2…

A: Given : X Y 70.2 77.5 46.4 -71.4 65 20.2 61.4 48 66.5 37.8 67.8 142.4 47.4 40.5…

Q: Bias from the sampling process (like using a convince sample) is taken into account in interval. If…

A: Given Solution:

Q: tervals based on one hundred how m ndom Samples of Size n vals Would you expect to i Unknown…

A: Given: 95 % confidence interval To find the interval to include unknown parameter.

Q: At a shooting range, instructors can determine if a shooter is consistently missing the target…

A: Step 1:   Suppose σ2 is the variance of the distances between the shots and the center of the shot…

Q: 581 580 581 577 580 581 577 579 581 583 577 578 582 581 582 580 a 95% confidence interval for the…

A: The given data is 581 580 581 577 580 581 577 579 579 578 581 583 577…

Q: A card is drawn at random from a deck of 52 playing cards. Find the probability of the card drawing…

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Q: If P(A∩B)=0.21, and P(A|B)=0.3P, then P(B)=

A: Answer : -Given,                P(A∩B)=0.21  and  P(A|B)=0.3                Find   P(B)=?

Q: a) Let Y₁, Y2,..., Yn denote a random sample of size n taken from a distribution with probability…

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Q: If P(E∩F)=0.09, P(E|F)=0.45P, and P(F|E)=0.5, then (a)   P(E)= (b)   P(F)= (c)   P(E∪F)= (d) Are the…

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

Q: According to the Vivino website, the mean price for a bottle of red wine that scores 4.0 or higher…

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Q: random sample of 15 tubes is selected from the manufacturing process. b) Find the probability that…

A: The probability of defective rate is 10%; p=0.10 A random sample of 15 tubes; n=15

Q: The time required to assemble an electronic component is normally distributed with a mean and a…

A: GivenMean(μ)=24standard deviation(σ)=13

Q: 1 2 3 4 5 6 7 7 8 9 10 11 12 13 14 15 16 Williams Smith Logan 1 1 1 Alexander 1 1 1 2 S Oliver…

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

Q: Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made…

A: Given X-bar=17.5 Standard deviations=5.2 n=65

Q: Q.2 (а) Three marbles are drawn without replacement form an urn containing 4 red and 6 white…

A: Given that: Number of red marbles = 4 Number of white marbles = 6 X denotes the number of red…

Q: The sampling distribution of sample means is the date computed for the specific sample of scores O…

A: We have to choose correct option We know Population(N) =  sample 1+ sample 2+.... We have to tell,…

Q: You buy a package of 122 Sm= interval for the true proportion (0.092, 0.220) (0.103, 0.230) (0.085,…

A: Given,  significance level (α) = 0.05 sample size (n) = 122 x = 19

Q: Quit Smoking: The New England Journal of Medicine published the results of a double-blind,…

A: Given P value=0.04, level of significance ɑ=0.05=5%