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Statistics

09/23/22

Stat question 3

About what percentage of the area under the curve of the standard normal distribution is between z=−1.655z=-1.655 and z=1.655z=1.655 (or within 1.655 standard deviations of the mean).

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Statistics

09/23/22

Stat question 2

For a standard normal distribution, find:P(z > c) = 0.1374Find c rounded to two decimal places.

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Statistics

09/22/22

Introduction to Statistics 5.4

The mean percent of childhood asthma prevalence in 43 cities is 2.15%. A random sample of 34 of these cities is selected. What is the probability that the mean childhood asthma prevalence for the... more

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Statistics

09/20/22

Need help with statistics

if the mean of 100 and a standard deviation of 15 approximately what percentage of individuals have IQ scores between 55 and 85

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Statistics

09/20/22

Suppose that E and F are two events and that N(E and F)=250 and N(E)=430. What is P(F|E)?

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Statistics

09/20/22

Find the z-score of a man who is 71.9 inches tall.

Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man who is 71.9 inches tall. (Round answer to 2 decimal places)

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Statistics

09/20/22

Approximately what fraction of infants would you expect to have birth weights above 4430 g? (Express your answer as a decimal, not a percent, and round to three decimal places.)

Using all 1991 birth records in the computerized national birth certificate registry compiled by the National Center for Health Statistics (NCHS), statisticians Traci Clemons and Marcello Pagano... more

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Statistics

09/20/22

Approximately what fraction of infants would you expect to have birth weights between 3210 g and 4430 g?

Using all 1991 birth records in the computerized national birth certificate registry compiled by the National Center for Health Statistics (NCHS), statisticians Traci Clemons and Marcello Pagano... more

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Statistics

09/20/22

Compute the z-score of an infant who weighs 2875 g. (Round your answer to two decimal places.)

Using all 1991 birth records in the computerized national birth certificate registry compiled by the National Center for Health Statistics (NCHS), statisticians Traci Clemons and Marcello Pagano... more

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Statistics

09/20/22

P(z < c) = 0.0037

For a standard normal distribution, find:P(z < c) = 0.0037Find c rounded to two decimal places.

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Statistics

09/20/22

What proportion of pregnancies last fewer than 262 days? P(X < 262 days)

The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days and a standard deviation of 16 days. A distribution of values is normal with a mean of 260 and a... more

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Statistics

09/19/22

Statistic problem on z score

Professor smith administer a survey to a group of inmates that is believed to measure antisocial attitudes. The average score on the antisocial attitude index is 100 with a standard deviation of... more

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Statistics

09/19/22

STATS QUESTION In the game of Parcheesi each player rolls a pair of dice on each turn.

In the game of Parcheesi, each player rolls a pair of dice on each turn. In order to begin the game, you must roll a five on at least one die, or a total of five on both dice. Find the probability... more

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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

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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

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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.

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Statistics

09/18/22

For his Math class, Jason scored 88, 80, 93 and 95 on his tests so far. Will he be able to get an average of 90 and above if his last test score is 90? explain why

sshaskka

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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?

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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

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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

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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

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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.

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Statistics

09/18/22

Stat question number 2

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

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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.

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Statistics

09/18/22

Stat question number 13

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

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Stat question 3

Stat question 2

Introduction to Statistics 5.4

Need help with statistics

Suppose that E and F are two events and that N(E and F)=250 and N(E)=430. What is P(F|E)​?

Find the z-score of a man who is 71.9 inches tall.

Approximately what fraction of infants would you expect to have birth weights above 4430 g? (Express your answer as a decimal, not a percent, and round to three decimal places.)

Approximately what fraction of infants would you expect to have birth weights between 3210 g and 4430 g?

Compute the z-score of an infant who weighs 2875 g. (Round your answer to two decimal places.)

P(z < c) = 0.0037

What proportion of pregnancies last fewer than 262 days? P(X < 262 days)

Statistic problem on z score

STATS QUESTION In the game of Parcheesi each player rolls a pair of dice on each turn.

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

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

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

For his Math class, Jason scored 88, 80, 93 and 95 on his tests so far. Will he be able to get an average of 90 and above if his last test score is 90? explain why

Can wyzant bill me for a tutoring session?

Stat question number 6

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Stat question number 1

Stat question number 13

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Suppose that E and F are two events and that N(E and F)=250 and N(E)=430. What is P(F|E)?