863 Answered Questions for the topic Statistics Question

Statistics Question

04/24/18

what is the probability that a single car of this model emits more than 0.07 g/mi of NOX?

I need help please.
Statistics Question

04/22/18

Average monthly electric bill

An electric company found the relationship between house size (x, in square feet) and monthly electric bill (y, in dollars) is given by yˆy^ = 0.03x + 18.50. Use this least squares line to predict... more
Statistics Question

04/22/18

How large a sample n would you need to estimate p with margin of error 0.04 with 95% confidence? Assume that you don't know anything about the value of p.

A local board of education conducted a survey of residents in the community concerning a property tax levy on the coming local ballot. They randomly selected 850 residents in the community and... more
Statistics Question

04/18/18

a die is rolled 10 times what is the chance of obtaining exactly 2 sixes

 This question is based off of a problem set given by my instructor.
Statistics Question Statistics

04/09/18

In order to get accepted into graduate school, you know you must score in the top 20% of scores on a standardized test.

If the test has a mean score of 800 and a standard deviation of 125, what is the lowest score you can achieve and still be admitted to the graduate school?

04/09/18

Probability question for Stats class help.

Suppose that we have  15 marbles in a jar. 7 of them are green, 2 of them are blue, and the rest are red. 1)What is the probability that the first marble we draw is blue?2)Suppose you drew a blue... more
Statistics Question Paired T Test 1 sample t Interval

04/08/18

AP Statistics T- test

An institute hosted 10 French teachers for 4 weeks.  At the beginning of the period, the teachers were given the Modern Language Association's listening test of understanding of spoken French. ... more
Statistics Question

04/08/18

A standardized test's scores are normally distributed with a mean a 500 and a standard deviation of 100.

If 1200 students take the test, how many would you expect to score over 650?Round your answer to the nearest whole number.
Statistics Question

04/07/18

How many movies has a typical middle schooler seen in the theater this year

use this data set. 0,1,1,1,1,1,2,2,2,2,3,3,3,5,7,10,10
Statistics Question

04/06/18

The following are speeds​ (mi/h) of cars measured with a radar gun. Determine the​ 5-number summary and boxplot for the data given below.

70   70   71   71     72   73   74  74 76   76 77 78 79 79 79
Statistics Question And Statistics Answer

04/06/18

find the z-score for the standard normal distribution where: p(z<+9)=0.8980

this is the entire question there is nothing else to ad
Statistics Question

04/03/18

statistic question

find the required sample size for sample to construct a 95% confidence interval for the population meant that has sampling error SE=0.25, and it is given that population standard deviation is 7.5

04/02/18

There is a 88.4% chance that my value of x is 30 or greater. If I assume my data is normally distributed..

There is a 88.4% chance that my value of x is 30 or greater. If I assume my data is normally distributed, can I determine the likelihood that my value of x is 26, 27, 28, 29, 31, 32, 33, 34... more
Statistics Question Math Cards Calculation

04/01/18

Statistics, please assist with break down... I received 1% as the answer.. is this correct?

A computer manufacturer uses graphic cards made by two companies N and I. They are using the cards made by N in 80% of the computers and made by I on 20% of the computers. They have found that 2%... more
Statistics Question Statistics Stats

03/29/18

Find the value of the test statistic

I would really appreciate the help guys. Thanks again !   1)the claim is that the proportion of peas with yellow pods is equal to 0.25 the sample statistics from one experiment include 560 peas... more
Statistics Question

03/28/18

helpmeplease

Two cards are drawn without replacement from a standard deck of 52 playing cards. What is the probability of choosing a queen for the second card drawn, if the first card, drawn without... more
Statistics Question

03/25/18

an urn holds 4 pink marbles, 6 white marbles, and 5 purple marbles.

 a) If you pick a marble at random, what is the probability that it is white?
Statistics Question Math Statistics Business Statistics

03/21/18

Statistics Question

The Price of a bond is uniformly distributed between $80 and $90.    a. What is the probability that the bond price will be greater than $83? b. What is the probability that the bond price will... more
Statistics Question

03/18/18

Statistics Question for Blind Bag purchases.

If the odds of getting a certain character in a blind bag is 1 in 5 and the bags cost $2.00 each, how much will you need to spend before you might get a certain one? Is it as simple as 5 x $2.00 =... more
Statistics Question

03/18/18

Find the area of the shaded region

A graph depicts IQ scores of adults and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the area of the shaded region.... (between the IQ scores of 102... more
Statistics Question Math Help Math Help For College

03/17/18

Given r^2 and SST, Find SSE(need help today)

given r2=0.0798 and sst=769.54, compute sse
Statistics Question

03/16/18

Standard Deviation

Suppose it is known that the weights of a certain group of individuals are approximately normally distributed with a mean of 140 pounds and a standard deviation of 25 pounds. What is the... more
Statistics Question

03/15/18

In a hospital 60% of the patients are married. What’s the probability that a sample of one word with 8 patient, had 3 were married

In a hospital 60% of the patients are married.        
Statistics Question Math Statistics Probability

03/12/18

What is the probability of selecting a jury of all​ students?

The grade appeal process at a university requires that a jury be structured by selecting seven individuals randomly from a pool of eleven students and eight faculty.     (a) What is the... more

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