Question 20: The range of a battery of a newly produced Electric vehicle is normally distributed with an average of 400 miles and a Standard deviation of 20 miles. What is the probability a new vehicle off the assembly line is getting a battery range between 380 miles and 420 miles

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: GivenMean(μ)=210.2standard deviation(σ)=2.3sample size(n)=13

Q: Question 3.2 3.2 A call centre receives calls that can be described by the Poisson process. The…

A: A call centre receives calls that can be described by the poisson process. The average rate at which…

Q: Question 4 The annual commissions earned by sales representatives of a computer shop follow a normal…

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Q: The miles per gallon obtained by the 1995 model Q cars is normally distributed with a mean of 22…

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Q: Question 4…

A: The length of a fully grown hibiscus plant is normally distributed. Mean (μ) = 35cm

Q: Question 2: A certain brand of jelly beans are made so that each package contains about the same…

A: Given a certain brand of jelly beans are made so that each package contains about the same number of…

Q: Question 26: resting body temperatures are normally distributed with an average of 98.25 degrees…

A: Let X denote the resting body temperatures are normally distributed with an average of μ=98.25…

Q: (QUESTION 4) For a certain type of computers, the length of time between charges of the battery is…

A: According to the given information in this question We need to find the probability between…

Q: The probability that a house in an urban area will be burglarized is 5%. A sample of 50 houses is…

A: Let, X is the number of houses that were burglarized. X~Binomialn=50,p=0.05

Q: QUESTION 3 A machine that produces a major part for an airplane engine is monitored closely. In the…

A: Given,margin of error(E)=0.04standard deviation(σ)=0.30α=1-0.95=0.05α2=0.025Z0.025=1.96      (from…

Q: QUESTION 14 When engaging in weight-control (fitness/fat burning) types of exercise, a person is…

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Q: QUESTION 1 To estimate the average time it takes to assemble a certain computer component, the…

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Q: Problem 2 The advertised claim for batteries for cell phones is set at 48 operating hours with…

A: Comment: As per the our comapny guidelines we are supposed to answered only three subparts. Kindly…

Q: Question 8 The lifetimes of interactive computer chips produced by a certain semiconductor…

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Q: QUESTION 3 A certain brand of jelly beans are made so that each package contains about the same…

A: Sampling Distribution of a Normal Variable :  Given a random variable X. Suppose that the…

Q: Question 20. part C. Nationally, patients who go to the emergency room wait an average of 7 hours…

A: Given: Sample mean waiting time x¯= 5.8 Sample standard deviation (s)= 1.7 Sample size of patients…

Q: The length of a fully grown hibiscus plant is normally distributed and has a mean 35cm. It is found…

A: Let X ne the length of  a fully grown hibiscus plant is normally distributed with mean 35 cm and…

Q: QUESTION 3 If a random sample of size 15 is drawn from a normally distributed population with mean…

A: Given : X follows t distribution.

Q: Question 4 (a) At a certain community college, the time that is required by candidates to complete…

A: We want to find the probability  A) P(56<x<60) Note: According to bartleby experts question…

Q: When testing (at the 5% level of significance) whether the proportion of peole who are contributing…

A: Test is that whether the proportion of peole who are contributing has increased.

Q: uestion 7.6. A sample of 105 sanitation workers for the city of Euonymus, Texas, earns an average of…

A: Given Information: Sample size n=105 Sample mean x¯=24,375 Hypothesized value of population mean…

Q: Question 6 Suppose a Pharmaceutical company manufactures a specific drug and needs to perform some…

A: Hypothesis Testing: Hypothesis testing is a statistical inference technique that uses sample data…

Q: QUESTION 19 The amounts of times that adults sleep are normally distributed with a mean of 6.8 hours…

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Q: Question 20             Annual expenditure for prescription drugs was $838 per person in the…

A: (a) Here, the claim of the test is that the sample data support the conclusion that the population…

Q: answer. The table is inserted. i. Find the standard deviation σ. [4] ii. When plants are chosen for…

A: Given Information Mean µ = 35 P(X>45) =0.05 P (Z > z) = 0.05 P(Z <z) = 1 – 0.05 =0.95 (i)…

Q: QUESTION 9 Assume the cost for an automobile repair is normally distributed with a mean of $524 and…

A: (9) Obtain the cost if the lower 7% of automobile repair charges. The cost if the lower 7% of…

Q: The amounts of ice cream in all such cartons have a normal distribution with a mean of 16 ounces and…

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Q: QUESTION 15 The standard devation for a sample is most kely larger than the standard deviation of…

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

Q: QUESTION 24 To estimate the average time it takes to assemble a certain computer component, the…

A: We have given that , Sample mean Xbar=12.5 Sample standard deviation (s)=2 Sample size = 25  We have…

Q: Question 3 Ghana Rice Company. (GRC) sells rice to selected shops in Accra. GRC uses an automatic…

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

Q: Chapter 6 Question 1. My boy was born on fifteenth of May, two thousand twenty, But here is a…

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Q: A bank's loan officer rates applicants for credit. The ratings are normally distributed with a mean…

A: From the information, the mean is 200 and the standard deviation is 50.

Q: The probability that a house in an urban area will be burglarized is 5%. A sample of 50 houses is…

A: (d) The standard deviation of the number of burglarized houses is 0.353, which is obtained below:…

Q: QUESTION 1 Find  the standard deviation of the following data items:   22, 27, 27, 35

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Q: QUESTION 5 A manufacturer of a lightbulb claimed that its lightbulbs have a mean lifetime of 700…

A: GivenMean(μ)=700standard deviation(σ)=120sample size(n)=144

Q: Question 4 The amount of time devoted to preparing for a statistics examination by students is a…

A: Given that  X~N(μ= 17 , σ= 5 ) μ= 17 , σ= 5 Formula for Z-score Z=(X-μ)/σ Note: According to…

Q: Two companies, A and B, drill wells in a rural area. Company A charges a flat fee of 3669 dollars to…

A: Given , Mean ll =250 tco-1                      Standard deviation =45tco-1 Company A =$3669 Company…

Q: QUESTION 4:   If the average yield of cucumber acre is 800 kg, with a variance 1600 kg, and that…

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Q: Question 4…

A: Given Information Mean µ = 35 P(X>45) =0.05 P (Z > z) = 0.05 P(Z <z) = 1 – 0.05 =0.95

Q: 8. (Topic 8) Suppose the average height of a two year old male is normally distributed with a mean…

A: We have given height of 2 year old male is normally distributed with mean =m=34.2 and sd=2.9 We have…

Q: QUESTION 19 A new electric car has batteries that can power the car for a certain amount of time. Of…

A: Given,mean(μ)=28standard deviation(σ)=10and the cars operation time is normally distributed

Q: Question 2 A particular fruit's weights are normally distributed, with a mean of 718 grams and a…

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Q: The results from a statistics class' first exam are as follows: The average grade obtained on the…

A: Assume, X be the random variable representing the grades of students. It is mentioned that the mean…

Q: QUESTION 9 The length of an adult Great White Shark is normally distributed with a mean of 3.4…

A: We have given that.   X~N( μ , ?^2 )   μ =3.4 , ? =0.5   Z-score =( x - μ )/?

Q: Find the mean, variance, and standard deviation for the number of sixes that appear when rolling 40…

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Q: Question 8 On the distant planet Cowabunga , the weights of cows have a normal distribution with a…

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Q: Question 3 A. The management of White Industries is considering a new method of assembling its golf…

A: 3 ( A ) We have given that  Sample size n = 24 Sample mean = 40.6 Standard deviation = 2.7 Note…