High School Competency Test A mandatory competency test for high school sophomores has a normal distribution with a mean of 380 and a standard deviation of 81. Round the final answers to the nearest whole number and intermediate z-value calculations to 2 decimal places. 2 (b) The bottom 2% of students must go to summer school. What is the minimum score you would need to stay out of this group? The minimum score needed to stay out of this group is 5

Q: 95.8 91.5 138.7 118.2 104.1 141.4 145.6 105.2 107 109.6 146.9 U (Clue: If done correctly, there…

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Q: What day of the week is June 19, 1861? A Wednesday B Tuesday Friday (D) Monday

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A: Given information:     Smoker Region = Southeast Sex No Yes   Female 139 36   Male 134 55…

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A: Given that  Mean = M = 2969 , Standard deviation = SD = 850

Q: assume that the daily retun on Apple stock is approximately normally distributed  with the mean…

A: From the provided information, Mean (µ) = 0.13% Standard deviation (σ) = 2.34% X~N (0.13, 2.34)

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A: Here We have to determine the probability of a z-score being greater than or equal to 1.34

Q: A series comprising five individual observations is as follows 3,8,5,6 and 4 convert these numbers…

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Q: Consider two events A and B from the same sample space S. Which of the following statements is not…

A: As per our guidelines, I can solve only first 1 question. Kindly post the remaining question again.

Q: Suppose the everyone in a community has a p=0.32 probability of being a Type-II Diabetic.…

A: Answer: From the given data, Probability of being a type-ii diabetic = p = 0.32 Sample size (n) = 15

Q: A textile fiber manufacturer is investigating a new drapery yarn, which the company claims has a…

A: Given Information: Mean thread elongation is 12 kilograms Standard deviation is σ=0.5 Null…

Q: 1338 policy holders of an insurance company   If we randomly select a non-smoker, what is the…

A: From the given information,

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A: Given: PDF fx=15        1<x<6 Lower limit (a) = 1 Upper limit (b) = 6

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A: Given: The population consist of 40, 29, 17, 10

Q: p>alpha a) reject the null hypothesis b) accept the null hyopthesis

A: Given,p>alpha  a) reject the null hypothesis  b) accept the null hyopthesis

Q: A car manufacture is considering five possible names for its latest model car. Before choosing a…

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A: Z score :  Z - score = ( x - mean)/standard deviation  For any data ,  As x changes , value of z…

Q: 2. The S.A. Department of Labour and Statistics South Africa released the current unemployment rate…

A: Let p be the population proportion unemployment rate  p=5.3%=0.053

Q: The worldwide market share for a web browser was 20.4% in a recent month. Suppose that a sample of…

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A: As per our guidelines, I can solve only first 3 subparts. Please post the remaining subpart again…

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A: Do you have a Cat? Yes No How well do you sleep? Good Neutral Bad     Good…

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Q: K Twenty of the 200 digital video recorders (DVRs) in an inventory are known to be defective. What…

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Q: 3.Use De’Morgan’s laws to find the negation of the following (both in words and symbolic form).…

A: According to the De-Morgan's laws : If p and q are two variables then 1) ~(p∨q) = ~p ∧ ~q and,  2)…

Q: A genetic experiment with peas resulted in one sample of offspring that consisted of 449 green peas…

A: The question is about confidence interval Given : No. of green peas = 449 No. of yellow peas = 167…

Q: (b) At least one moves outsi 3. The annual probability that an individual makes an interstate move…

A: Given that  n = 10 , p = 0.03 , q = 1 - p = 1 - 0.03 = 0.97 X ~ Binomial (n = 10 , p = 0.03) X =…

Q: Suppose that a chewing gum company claims that 85% of dentists recommend their chewing gum. Odina…

A: Introduction: Denote p as the true population proportion of dentists who recommend the chewing gum…

Q: If the masses of 250 students are normally distributed with mean 69 kg and standard deviation 3 kg.…

A: Answer: From the given data, Let X: mass of students Mean (μ) = 69 kg Standard deviation (σ) = 3 kg…

Q: Perform the following steps in R. Answer the questions in parts where there are questions. Attach R…

A: Given : R code : x=c(10,3,6,9,20,1,4,5)

Q: Question 9 Which of the following shows a positive correlation? A B : ●●● : ...

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Q: If random samples, each with n = 4 scores, are selected from a normal population with μ = 80 and a =…

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Q: This data represents tests scores on the statistics final 85 63 40 59 68 98 102 43 78 86 95 63 99…

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Q: All the scores are whole numbers, - The range is 90, - It has been decided to use 10 intervals.…

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Q: K The accompanying table describes the random variable x, the numbers of adults in groups of five…

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Q: Concerns about climate change and CO2 reduction have initiated the commercial production of blends…

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Q: Solve for the following: a) Var(2X−5) when X ∼ U {1,2,…,20}. b) Var(3X−4) when X ∼ U {1,2,…,30}.

A: Given,X~U(1,2,.....20)minimum value=1maximum value=20f(x)=120-1f(x)=119         ; 1≤X≤20

Q: An elevator has a placard stating that the maximum capacity is 4200 lb-28 passengers. So, 28 adult…

A: given datamaximum capacity = 4200 lb    - ----- 28 passanger∴ 420028 = 150normal…