09/18/22

Can wyzant bill me for a tutoring session?
I do not have current access to a lot of money. I need a day so the bank can transfer money into my account so that I can pay for the lesson. Does Wyzant allow for a delayed payment?
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09/17/22

help me with my statistics homework
67.7 101.8 7.3 -181.9 19.7 159.8 43.5 -730 45.7 426 53.9 -18.7 58 216.6 40.9 -74.2 46.8 204.5 43.5 216 35.6 302.5 37.1 -51.2 59.4 -453 18.6 238 248.9 -89.4 What is... more
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09/16/22

Hello I need help with errors type please help
1) Given a sample X1, ... , Xn from X ~ N (𝜇, 𝜎2), we want to test H0 : 𝜇 = 1 against H1 : 𝜇 ≠ 1. If X̅ = 1.2, n = 9, and S = 0.2 T = ?, df = ?2) For question 1, what type of errors do we make? (𝛼... more
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09/15/22

Application of standard deviation

The physical plant at the main campus of a large state university recieves daily requests to replace fluorescent lightbulbs. The distribution of the number of daily requests is bell-shaped and has... more
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09/15/22

Statistics questions
1A discrete random variable X models how many sales per day a salesman makes. From past experience we know PX(X ≤ 3) = 0.3 and PX(X ≥ 3) = 0.9. Which of the following must be true?PX(X < 4) <... more
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09/15/22

business statistic
a)       Three randomly selected households are surveyed as a pilot project for a larger survey to be conducted later. The numbers of people in the households are 5, 7, and 9. Consider... more
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09/14/22

Hello, I need help with the word problem
1.71) Laughter among deaf signers. The Journal of Deaf Studies and Deaf Education (Fall 2006) published an article on vocalized laughter among deaf users of American sign language (ASL). In... more
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09/01/22

Statistics Help?
In real-life applications, statistics helps us analyze data to extract information about a population. In this module discussion, you will take on the role of Susan, a high school principal. She is... more
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09/11/20

Statistics math question
a physics class of 50 students measured thier heights. thier average height was 71 inches with a standard deviation of 5. suppose a 51st student enters the room. find the height in inches of the... more
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09/09/20

What kind of variable?
The amount of times a person eats a snack per day is an example of what kind of variable?
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09/09/20

True or False question
True or False: Data with 0 responses can be left out of frequency tables?
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09/09/20

Question about skews
Imagine I gave out a very easy exam and the average score was an 85. What kind of skew would I have if I were to plot the data in the graph?
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09/08/20

A gambling King Pin (who is really good in math), placed a very tricky game. Given one deck of cards, a gambler (who is not good in math) is allowed to select one ca
A gambling King Pin (who is really good in math), placed a very tricky game. Given one deck of cards, a gambler (who is not good in math) is allowed to select one card from each suit (diamond,... more
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09/08/20

A question about normal distribution and how to get a percentage
The life of a fully-charged cell phone battery is normally distributed with a mean of 14 hours with a standard deviation of 1 hour. What is the probability that a battery lasts at least 13 hours?
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09/05/20

Statistics - Computing for critical values
Estimate the value of the tcritical if i wish to run the test of acceptance analysis with an alpha and a beta level of 5% each, when detecting moderate to large effects in a right tailed... more
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09/04/20

Given events J and K: P(J ) = 0.19; P(K ) = 0.31; P(J OR K ) = 0.44.
Given events J and K: P(J ) = 0.19; P(K ) = 0.31; P(J OR K ) = 0.44.Part (a)Find P(J AND K ). (Enter an exact number as an integer, fraction, or decimal.)Part (b)Find the probability of the... more
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09/04/20

G and H are mutually exclusive events
G and H are mutually exclusive events.• P(G) = 0.5• P(H) = 0.3Part (a)Explain why the following statement MUST be false: P(H | G) = 0.4. A.The events are mutually exclusive, which makes P(H AND G)... more
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09/04/20

an experiment consist of first rolling die and them tossing a coin
An experiment consists of first rolling a die and then tossing a coin.(a) List the sample space. {(3, H), (4, H)} {(3, H), (3, T), (4, H), (4, T)} {(1, T), (2, T), (3, T), (4, T), (5, T), (6,... more
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09/04/20

math word problem
The daily circulation of the largest newspaper in the country is about 1.71 million.The daily circulation of the third largest newspaper in the country is about 1.04 million. Express the relative... more
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09/04/20

statistical reasoning word problem
Fill in the blank in the following statement.If a truck weighs 35​% more than a​ car, then the​ truck's weight is​ _____% of the​ car's weight.
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09/01/20

How many standard deviation is the sample mean from the mean of the distribution of sample​ means?
Assume that cans are filled so that the actual amounts have a mean of 14.00 ounces. A random sample of 36 cans has a mean amount of 14.36 ounces. The distribution of sample means of size 36 is... more
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08/30/20

what percentage of the students have grade point averages that are at least 3.72? Please do not round your answer.
Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of and a standard deviation of . Using the empirical rule, what... more
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07/21/20

Introduction to Stats
Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested.... more
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04/27/20

The U.S. Forest Service is considering additional restrictions on the number of vehicles allowed to enter Yellowstone National Park.
To assess public reaction, the service asks a random sample of 150 visitors if they favor the proposal. Of these, 89 say “Yes.” 1.Construct and interpret a 99% confidence interval for the... more
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08/21/19

The Chi-Square Distribution
You intend to conduct a goodness-of-fit test for a multinomial distribution with 3 categories. You collect data from 98 subjects.What are the degrees of freedom for the χ2 distribution for this... more
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