Question

The 90th percentile of the standard normal distribution is 1.645.

a. true

b, false

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Other

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: In reading psychological research, you encounter of the following statements. Interpret each one. A....

A: A. It is given that, the IQ scores are normally distributed.

Q: Write down the formula for the binomial distribution. What do n, x, and pi represent in the formula?...

A: Click to see the answer

Q: Among 100 fish caught in a certain lake, 18 were inedible as a result of chemical pollution. Con-str...

A: Confidence interval: The (1-α) % confidence interval for proportion p is given by,

Q: Karen has an economics final next week. Find the mean of the following list of hours she studied for...

A: Given: Number of samples (n) = 6 1 5 7 4 1 4 Sum of X = 22 Formula:

Q: QUESTION 11 The mean measure of high density lipoprotein (HDL), or good cholesterol, is 54 with...

A: It is given that the mean is 54, the standard deviation is 17 and the sample size is 32. 

Q: Can you help me on these pages of homework problem 1.

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any ...

Q: Faulty or not? You are in charge of shipping computersto customers. You learn that a faulty disk dri...

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

Q: In each of the following situations, a random sample must be obtained. Determine whether a cluster, ...

A: Hey there! Thank you for posting the question.  Since you have posted a question with multiple sub-p...

Q: The Customer Care Department of Villa Supermarket Corp. recorded a high-time number of complaints fo...

A: (a)    

Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the co...

A: Click to see the answer

Q: d) Find the probability of getting a spade.     Leave your answer as a fraction. e) Find the probabi...

A: Deck consists of 52 cards. n(S)= 52  

Q: For a Poisson random variable, what is the relationship between its parameter and its mean?

A: Click to see the answer

Q: Find the variance for this data set of salaries  30, 34, 52, 48, 25, 36, 27 Round the final answer ...

A: The mean of the sample data can be obtained as:

Q: Dave's wardrobe contains 30 T-shirts, of which 10 are gray. Dave selects a T-shirt at random.What is...

A: Probability measures the chances of an event to be occurred. It can't be less than zero and greater ...

Q: Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an avera...

A: Obtain the probability of observing a sample mean of 31.8 grams of fat per pound or less in a random...

Q: Three group of researchers would like to seek your help to determine the methods of data collection ...

A: Methods of data collection: Data can be of two types, i.e, Quantitative and Qualitative. As per the ...

Q: 16-please see attached

A: What is Ration scale ?  The ratio scale possesses all the characteristics of nominal, ordinal and in...

Q: A. Create a Histogram B. What is the sample mean of the data C. What is the sample standard deviatio...

A: Part a The Histogram is obtained through excel as: Open the excel sheet and enter the data.    

Q: 8-please see attached

A: Click to see the answer

Q: Here is a data set: 43 35 30 49 44 31 30 29 32 59 21 34 40 32 28 25 35 34 25 58 26 21 23 ...

A: Here,the data set given is 43,35,30,49,44,31,30,29,32,59,21,34,40,32,28,25,35,34,25,58,26,21,23,38,3...

Q: Statistics Question

A: Given:   Mzn 69.6 3.0 Woman 64.1 3.8 Formula:

Q: b.  What is the cumulative relative frequency for flossing 7 times per week? (ANSWER) %Round to 4 de...

A: b) The formula to obtain cumulative relative frequency is as follow:

Q: A politician is interested in the proportion of voters in his district that think he is doing a good...

A: Click to see the answer

Q: Sketch the normal distribution with a. μ = −2 and σ = 2. b. μ = −2 and σ = 1/2. c. μ = 0 and σ = 2.

A: Click to see the answer

Q: Paul wants to estimate the mean number of siblings for each student in his school. He records the nu...

A: A parameter is a number representing the entire population. Usually sample statistics is used to est...

Q: How to answer e, f, g, and h?

A:  

Q: Custom-Home Resales. Regarding predicting the selling price of a home in the Equestrian Estates usin...

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any ...

Q: The mean is μ =137 and the standard deviation is σ = 5.3, Find the probability that X is between 134...

A: Click to see the answer

Q: If X = ln Y has a normal distribution with the mean μand the standard deviation σ, find the probabil...

A: Normal Distribution pdf is given by ,  It is given that ,  X = ln Y  that is ,  Consider , Using t...

Q: The diameters of pencils produced by a certain machines are normally distributed with a mean of 0.30...

A: Obtain the standard z-score for the random variable X equals 0.285. The standard z-score for the ran...

Q: Use frequency distribution table

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If y...

Q: Drug manufactures of Drug X, which was released on the market 5 years ago to treat Crohn's disease, ...

A: According to the provided data, there are a total, n of 6 individuals who developed drug-induced lup...

Q: In California, we need more rain to sustain the health of our natural environment, argriculture, and...

A: Let x indicates the inches of rain and f indicates frequency.  

Q: An American roulette wheel has 38 slots: 18 red, 18 black, and 2 green. What are the odds for the ba...

A: Click to see the answer

Q: D. What is the skewness of the data (Pearson's first mode of coefficient)? What could you conclude E...

A:  

Q: In testing the hypothese H0 : p = 0.4  Ha : p ≠ 0.4 The test statistic is found to be 1.87. What is ...

A: Click to see the answer

Q: The probability that a university graduate will be offered no jobs within a month of graduation is e...

A: Click to see the answer

Q: The mean cost of domestic airfares in the United States rose to an all­time high of $385per ticket (...

A: Click to see the answer

Q: Kara categorized her spending for this month into four categories: Rent, Food, Fun, and Other. The a...

A: From the provided information, Kara’s month spending = $333 + $417 + $500 +$250 = $1500 The amount s...

Q: Accounting Between quarterly audits, a company likesto check on its accounting procedures to address...

A: a.

Q: What is standard deviation?

A: There are various measures for measuring the amount of variation in the data.This amount of variatio...

Q: Suppose, X|0~ Binom(n,0)and 0-U (0, 0.25), then E(Y) is equals to, a) b) c) 2.15 8n 1.25 d) 8

A: Click to see the answer

Q: Seattle, Washington, averages m=34 inches of annual precipitation. Assuming that the distribution of...

A: From the provided information, Mean (µ) = 34 inches Standard deviation (σ) = 6.5 inches Let X be a r...

Q: Find the 24th percentile, P24, from the following data 1 3 4 5 11 14 19 21 24 34 35 36 41 43 ...

A: Given data in ascending order, 1 3 4 5 11 14 19 21 24 34 35 36 41 43 49 53 60 63 75 79 95 98 99...

Q: Manufacturer Sample mean voltage (millivolts) Sample standard deviatio A 108 4 B 102 What type of hy...

A: Click to see the answer

Q: The median age of the U.S. population in 1980 was 30.0 years. In 1991, the median age was 33.1 years...

A: It is given that the median age of the year 1980 was 30.0 years and the median age of the year 1991 ...

Q: A sociologist hypothesizes that the number of gun shops in a city will be related to its violent cri...

A: Click to see the answer

Q: Simulation. Let X be the value of a randomly selected decimal digit, that is, a whole number between...

A: a) The answer will vary. One of the possible answer is given below: Step by step procedure to obtain...

Q: A card is drawn from a standard deck of 5252 playing cards. What is the probability that the card wi...

A: A card is drawn from a standard deck of 52 playing cards. There are 13 diamond cards in a deck. Ther...

Q: How many miles are there between two cities, if the distance is represented by a 2.4 inch line on a ...

A: Click to see the answer