863 Answered Questions for the topic Statistics Question

Statistics Question

08/11/18

Statistics question

Suppose we are with a real estate agency that hasthe following houses listed in a specific geographicarea. $150,000; $146,000; $152,000; $155,000;$143,000; $157,000; $180,000; $148,000;... more
Statistics Question

08/03/18

what is the probability of getting a total of 7 or 11, if two dice are rolled?

statistics course 
Statistics Question

07/27/18

Normally distributed

Eleanor scores 680 on the mathematics part of the SAT. The distribution of SAT math scores in recent years has been Normal with mean 555 and standard deviation 79.Gerald takes the ACT Assessment... more
Statistics Question

07/27/18

Normally distributed

Eleanor scores 680 on the mathematics part of the SAT. The distribution of SAT math scores in recent years has been Normal with mean 555 and standard deviation 79.Gerald takes the ACT Assessment... more
Statistics Question Math Algebra 1 Algebra 2

07/26/18

Is this question is a combination or a permutations? and how to solve it step by step ?

How many licence plates of three symbols (letters and digits) can be made using at least one letter in each? 
Statistics Question

07/23/18

What is the z score of x=9, if 9 is 1.5 standard deviations to the left of the mean?

I would like some help with this question and explanation.  
Statistics Question

07/18/18

usual and unusual values

A certain group of test subjects had pulse rates with a mean of 80.580.5 beats per minute and a standard deviation of 10.510.5 beats per minute. Would it be unusual for one of the test subjects to... more
Statistics Question

07/18/18

Normal Distribution

How do I tell if my data is normally distributed looking at my data on the Shapiro-Wilk output?   Male: Statistic: .966 df: 14 Sig. .822   Female: Statistic: .912 df: 14 Sig:... more
Statistics Question

07/18/18

independent t test

Which of the following is always true regarding the relationship between the one- and two-tailed significance tests? Select all that are true.Question 10 options:If the two-tailed test is... more
Statistics Question

07/18/18

independent sample t test

A 95% confidence interval for the difference of means is calculated to be -1.23 to -0.33. What conclusion can be made? Select all that are true.Question 9 options:The two group means are equal.The... more
Statistics Question

07/18/18

The combined standard deviation of the groups’ data, as if it were not separated into to different groups is called the

The combined standard deviation of the groups’ data, as if it were not separated into to different groups is called the: standard errorpooled standard deviationaverage errorpooled standard error
Statistics Question

07/15/18

discount depend of product quantity

let's say we make business, we sell products, but if anyone buys more we will discount more, let's say if we sell 5000 product 2$ for each, and we sell 1000000 by 0.35$ for each, can anyone give me... more
Statistics Question Statistics

07/13/18

Find the test statistic and the p-value.

Independent random samples, each containing 70 observations, were selected from two populations. The samples from populations 1 and 2 produced 59 and 49 successes, respectively. Test H0:(p1−p2)=0... more
Statistics Question Statistics

07/13/18

state the null and alternative hypothesis, find the test statistic.

In a study of red/green color blindness, 1000 men and 2850 women are randomly selected and tested. Among the men, 90 have red/green color blindness. Among the women, 8 have red/green color... more
Statistics Question Statistics

07/13/18

State the null and alternate hypotheses and find the degree of freedom.

Sue thinks that there is a difference in quality of life between rural and urban living. She collects information from obituaries in newspapers from urban and rural towns in Idaho to see if there... more
Statistics Question Statistics

07/11/18

soda cans have volumes of 13.39oz & a std dev of 0.12oz What is min. usual value

 statistics
Statistics Question Statistics Probability

07/10/18

probability question help please!!!

Four cards are drawn from a standard deck. No cards are returned.a) Which is more likely:Event A: drawing a straight (four consecutive cards e.g. 5, 6, 7, 8), orEvent B: drawing four consecutive... more
Statistics Question

07/07/18

3) It is common for car insurance companies to charge higher premiums for younger drivers. Younger drivers tend to earn less income than older drivers on avera

3) It is common for car insurance companies to charge higher premiums for younger drivers. Younger drivers tend to earn less income than older drivers on average. So why are younger drivers... more
Statistics Question

07/05/18

Word problem

For the following data:   0.1   2.5.  2.6.  5.1   5.3.  6.7.  7.1 7.3.  7.5.  7.5.  8.9.  9.9.  10.1.  11.3 11.7.  12.5.  12.8.  14.1.  15.0.  17.5.  18.9 19.8.  21.7. 24.4.  24.9   a.... more
Statistics Question

07/02/18

Calculate the sample standard deviation and sample variance for the following frequency distribution of final exam scores in a statistics class. If necessary, r

Final Exam ScoresClass Frequency51 - 60 661 - 70 1171 - 80 681 - 90 1191 - 100 4 Calculate the sample standard deviation and sample variance for the following frequency distribution of final exam... more
Statistics Question

07/01/18

Assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find

Assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean muμ and standard deviation... more
Statistics Question

06/30/18

finding the test statistic and P Value given a set of data

Listed below are the lead concentrations in mug/g measured in different traditional medicines. Use a 0.10 significance level to test the claim that the mean lead concentration for all such... more
Statistics Question

06/28/18

stats questions

A random sample of 159 full-grown lobsters had a mean weight of 18 ounces; the standard deviation of weights of all lobsters is thought to be σ = 2.8 ounces.Use this data to construct a 98 percent... more
Statistics Question Simple Random Sample

06/28/18

Simple random sample exercise using α= 5%

One company manufactures steel parts whose diameters follow a normal distribution with μ = 0.5 mm and σ^2 = 0.0784 mm^2. With the aim of increasing homogeneity in production, without modifying the... more

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