Suppose X~ N(-83, 3.1462). Use this distribution to help you answer the following ques What is P(X<-81.651)? Where relevant, round your answer to three decimal places. Hint: To help you answer this question, you may wish to draw a picture of the distribution and probability you need to find. To see some examples, see the section called "Using the distribu X to answer questions". Answer:

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: given data, normal distribution , μ=100σ=15we have to find out the shaded region for the given…

Q: Five students find the following number of pencils in their backpacks: 3, 1, 4, 3, 15. Find and…

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Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: Here the given graph is

Q: ii, 20 coins are flipped each with a probability of 0.5 that it will be heads. What is the standard…

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Q: The mean amount of time it takes a kidney stone to pass is 15 days and the standard deviation is 6…

A: It is given that the mean and the standard deviation are 15 and 6, respectively.

Q: The average American gets a haircut every 39 days. Do college students get their hair cut less…

A: A hypothesis test is a statistical  method that uses sample data to evaluate a hypothesis  about a…

Q: A running coach wants to know if participating in weekly running clubs significantly improves the…

A: Option a) is correct.

Q: Assume that the readings on the thermometers are normally distributed with a mean of 0° and standard…

A: We have given that  X~N( 0 , 1 ) mu=0 , sigma =1 Z-score =(x-mu)/sigma

Q: Q4. Suppose a poll of 15 voters is taken in a large city. The purpose is to determine x, the number…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted....…

Q: Please calculate the SD of a sample of 11 data points using the formula taught in class.  The…

A: Sample size (n)= 11Sample mean The sum of all the scores squared It is required to calculate the…

Q: udents? The data below shows the results of a survey of 20 college students asking hem how many days…

A: Given Sample size = 20 Sample sum = 812 Sample mean = 40.6

Q: The heights of women aged 20 to 29 follow approximately the (64, 2.7) distribution. Men of the same…

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Q: The average wait time to get seated at a popular restaurant in the city on a Friday night is 14…

A: b. Claim: The mean wait time greater than for men who wear a tie. Null Hypothesis: H0: μ=14…

Q: Suppose X - N (-9,4). Between what a values does 95.48% of the data lie? The range of a values is…

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Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 76 mph and…

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Q: 4

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Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A: normal distribution μ = 100σ = 15 P(85&lt;x&lt;110) = ?

Q: Today, the waves are crashing onto the beach every 4.6 seconds. The times from when a person arrives…

A: The mean of this distribution is  a midpoint between the ends.  Mean = (4.6 + 0)/2 = 2.3 seconds

Q: A bus comes by every 7 minutes. The times from when a person arives at the busstop until the bus…

A: The mean would be midpoint between the ends. μ = (0 + 7 )/2 = 3.5 minutes

Q: hts per a 12,370. Let X = number o places where possible.

A: Here it is given that X denotes the no of ants in a randomly selected acre of a forest. Mean (μ) =…

Q: 18. For the following set of scores: 7564 4 3 89 4 7 5 5 6 947 5 10 6 8 5 6 6 3 4 8 5 a. Construct a…

A: The total number of observations is .The 26 observations are given in the example.

Q: nd the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are…

A:

Q: fllustration 17.39. In a Poįsson distribution, the probability P(x} for x=0 is 10 per cent. Find the…

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Q: The average THC content of marijuana sold on the street is 10.8%. Suppose the THC content is…

A: Given, mean= 10.8  Standard deviation= 1 So, variance= 12=1 So, X~N(mean,variance)= N(10.8,1)…

Q: Please show all diagrams and work. Circle your answers. 1. The average weight of an NFL player is…

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Q: The following frequency table shows the number of fires per month in a city. Complete the table…

A: Given the frequency distribution and by using this we calculate mean and standard deviation.

Q: The average American gets a haircut every 44 days. Is the average smaller for college students? The…

A: Introduction: Denote μ as the true average number of days that college students get a haircut.

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: Let X denote the IQ scores and it follows normal distribution with  mean of μ=100 and standard…

Q: Но: Select an answer H1: Select an answer The test statistic | t (please show your answer to 3…

A: given  μ=15 ,n=13 , x¯ = (sum of sample observations)/no of observations…

Q: Examine the image below and then answer all parts of the question under it. Enter your answers as…

A: a) There are 4 yellow objects in 10 objects.So, P(yellow)=410=0.4b) There are 3 hearts in the 10…

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

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Q: For the image below, what would you input into the graphing calculator function to find the…

A: Answer: - Given, A standard normal curve                 Find P(Z &gt; -0.92) = ?

Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

A:

Q: The average student loan debt for college graduates is $26,000. Suppose that that distribution is…

A: The standard normal distribution is the continuous probability distribution. The formula to find the…