844 Answered Questions for the topic Statistics Question

05/28/18

#### how many ways can 3 students sit in a row of 21 chairs

how many ways can 3 students sit in a row of 21 chairs for a photograph

05/23/18

#### The month of the year is December. What is the type of data is December?

Is it categorical discrete or continuous data

05/22/18

#### standard deviation

whats the standard deviation of the data set below, Rounding your answer to three decimal places?2, 4, 6, 6, 8, 10, 11, 12, 14, 16, 17, 18, 18, 18

05/19/18

#### how to solve this question

Over a long period of time in a large multinational corporation, 10% of all sales trainees are rated as outstanding, 75% are rated as execellent/good, 10% are rated as satisfactory, and 5% are... more

05/18/18

#### mean noise level in 171 randomly selected ward area 58.0 decibelsthe population standard deviation 4.8. Find the 90% confidence interval of the true mean.

i need help with this question and many others and im hoping you can help me thanks

05/11/18

#### Need assistancewith the foolowing question.

The female death rate in Britain in 2009 was 49.3 per 100 000 of population and the male death was 71.2 per 100 000. Given that the population of Britain was 61 113 295, how many more male deaths... more

05/04/18

#### Briefly explain the benefits of stratification

this question is based on sampling concepts in survey work

05/01/18

#### A probability question

This is a conditional probability question I am struggling to solve and understand. Any insight would be so very useful.  Here is the problem: A five digit number is formed from the digits... more

04/27/18

#### To find the Mean and Standard Deviation

Total amount of time (x, in minutes) spent commuting by the entire 240 residents of a housing area was recorded.   Given that total x = 10,980 and total ( x - µ )² = 23,191. Compute the mean and... more

04/25/18

#### Statistics question

a candidate must win 263 of the total of 523 votes in an electoral college. Let's suppose that the largest region gets 52 votes. Assuming that a candidate wins this region, the number of additional... more

04/25/18

#### Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal place

Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.) μ = 14.2; σ = 3.2 P(8 ≤ x ≤ 12)... more

04/24/18

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

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

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.

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?

04/08/18

#### 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

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.

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

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

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

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

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