8,958 Answered Questions for the topic statistics

Statistics

09/19/22

STATS QUESTION A basketball player has an 80% chance of making the first free-throw he shoots.

A basketball player has an 80% chance of making the first free-throw he shoots. If he makes the first free-throw shot, then he has a 90% chance of making the second free-throw he shoots. If he... more
Statistics Probability

09/19/22

Probability (Intro, Mult/Add Rules, & Counting) Exercises

Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 102 people in the 18-21 age bracket and finds that 87 of them respond and 15... more
Statistics Stata

09/18/22

I need help with STATA coding I am trying the use the replace command to give variable B a value

B=0 if A<=7.6 indicating no evidence of clinical risk factors or B=1 if A>7.6 is what I am trying to do. I do not know why I keep getting a lot of syntax errors.
Statistics Stata

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?
Statistics

09/18/22

Stat question number 6

Suppose you work for a large coffee distributor that has a secret coffee blend it sells to local stores. You mix the Rift Valley blend with the Terraza blend, but always in the same proportion.... more
Statistics

09/18/22

Stat question number 5

You are going on a long trip and want to calculate your Miles per gallon. When you start your trip your odometer read 111376 miles. At the end of your trip your odometer reads 111566 miles. You... more
Statistics

09/18/22

Stat question number 4

Write each rate as a fraction in lowest terms5 feet in 35 seconds feet/secDo not enter the units
Statistics

09/18/22

Stat question number 3

Consider the rectangle with width 12 in and length 39 in, write a ratio of the length to the width.
Statistics

09/18/22

Stat question number 2

Enter the ratio as a fraction in lowest terms6 ft to 26 in.
Statistics

09/18/22

Stat question number 1

Tracey paid $165 for an item that was originally priced at $320. What percent of the original price did Tracey pay? Round to the nearest tenth of a percent.
Statistics

09/18/22

Stat question number 13

For the following calculate the Area of each circle with the given dimension.d = 6 m
Statistics

09/17/22

Stat question number 12

A cone-shaped pile of sawdust has a base diameter of 38 feet, and is 15 feet tall. Find the volume of the pile. ft.3Round your answer to the nearest tenth if necessary.
Statistics

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
Statistics

09/16/22

Statistics Homework

he Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 40 ounces and a standard deviation of 8 ounces.Use the Standard Deviation... more
Statistics

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
Statistics

09/16/22

Question is in description

Suppose the grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.52 and a standard deviation of 0.38. Using the empirical rule, what... more
Statistics

09/16/22

I need help with is question?

Calculate the range, population variance, and population standard deviation for the following data set. If necessary, round to one more decimal place than the largest number of decimal places given... more
Statistics

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
Statistics

09/15/22

Hello, I need help solving the question below. Please help

Given a sample X1, … , X9 ~ 𝑁 (𝜇, 32), if 𝜇 = 1 , 𝑃 ( − 2 < 𝑋̅ < 4 ) = ?
Statistics

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
Statistics

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
Statistics

09/15/22

Stat Question Number 13

Multiple-choice questions each have 4 possible answers, one of which is correct. Assume that you guess the answers to 4 such questions.Use the multiplication rule to find the probability that the... more
Statistics

09/15/22

Question about Standard Deviation

x P(x) 0 0.05 1 0.3 2 0.3 3 0.35 Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places  

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