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Statistical Analysis
Page 6
Questions (477)
Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed
4 answers
asked by
Stephanie
1,479 views
quality manager believes there may be a relationship between the experience level of an inspector and whether a product passes
1 answer
asked anonymously
44 views
The quality manager believes there may be a relationship between the experience level of an inspector and whether a product
1 answer
asked anonymously
77 views
If you are using the method of least square for fitting trends in an annual time series containing 25 consecutive yearly values,
1 answer
asked by
Mark
37 views
What is the formula for calculating the variance for ungrouped data
1 answer
asked by
Raven
30 views
The x-axis represents a student's age in years and the y-axis represents the number of times the student cried each month on
1 answer
asked anonymously
155 views
Ram earned a score of 940 on a national achievement test. The mean test score was 850 with a standard deviation of 100.what
3 answers
asked by
johnprabhakaran
1,411 views
Reginald Brown an inspector from the department of weights and measures, weighs 15 eighteen-ounce cereal boxes of corn flakes.
4 answers
asked by
Mark
1,320 views
Using the z table, find the critical value (or values) for an = 0.12 right-tailed test.
2 answers
asked by
Anonymous
1,288 views
One of nature's patterns connects the percent of adult birds in a colony that return from the previous year and the number of
2 answers
asked by
Les
1,265 views
There are two different formulas or methods that can be used to calculate SS.
a. Under what circumstances is the definitional
1 answer
asked by
Liz
1,269 views
A professor is interested in the relationship between the number of hours students study for
a quiz and their quiz grades. She
1 answer
asked by
April
1,247 views
The following list is a sampling of the costs of various statistics textbooks used at several colleges. Give the upper
3 answers
asked by
martha
1,167 views
Trend of the data
1 answer
asked anonymously
22 views
For which of the following cases could you use logistic regression?
Group of answer choices To predict the probability that a
1 answer
asked by
Mark
36 views
A company is considering installing new machines to assemble its products. The company is considering two types of machines, but
1 answer
asked by
Jose
1,146 views
The turnover (in millions of pounds) for 8 train companies and 8 coach companies are given below.
Train 4.3 13.2 134 88 92 66.5
1 answer
asked by
waqas
1,100 views
testing for the differences between means of 2 independent populations where the variances in each population r unknown, u must
2 answers
asked by
Student
1,112 views
In a study of MP3 player popularity, 22% of people in a random sample of 1100 Americans age 12 and older indicated that they
1 answer
asked by
Becca
1,093 views
Tukey's HSD test is used
a. prior to performing a one-way ANOVA. b. to determine the amount of difference between group means. c.
3 answers
asked by
Kevin
1,097 views
. A professor is interested in knowing the correlation, if any, of students’ scores on the first and second exams given in his
2 answers
asked by
John
1,089 views
The percentage of various colors are different for the "peanut" variety of M&M's candies, as reported on the Mars, Incorporated
1 answer
asked by
Elaine
1,080 views
At a local high school students were randomly assigned to one of two math teachers- Mrs smith and mrs jones. After the
1 answer
asked by
Anonymous
1,100 views
An agricultural field trial compares the yield of two varieties of tomatoes for commercial use. The researchers divide in half
1 answer
asked by
Kasey
1,055 views
Variables in the dataset dietstudy
Variable name Variable description id Patient ID Basetg Pre measurement lev Final tg Post
1 answer
asked by
veeone
1,046 views
The Sledge Tire and Rubber Company plans to warranty its new mountain bike tire for 12 months. However, before it does this, the
1 answer
asked by
nouah
1,054 views
during the month of July, an auto manufacturer gives its production employees a vacation period so it can tool up for the new
2 answers
asked by
Samantha
1,006 views
he amount of gasoline that 80 drivers bought to fill their cars’ gas tanks is shown. How many drivers bought more than 12
1 answer
asked anonymously
84 views
A research center claims that 50% of people believe that drivers should be allowed to use cellular phones with hands free
2 answers
asked by
Amber
1,005 views
A random group of 5 boys and a random group of 5 girls were selected to determine whether boys or girls text more. The table
3 answers
asked by
hEk YoUr IdEaS
972 views
The Gibbs Baby Food Company wishes to compare the weight gain of infants using their brand versus their competitor’s brand. A
2 answers
asked by
Barbara
940 views
In which of the following situations would it not be appropriate to use a paired t-test to
analyze the data? A. A marriage
4 answers
asked by
Mark
904 views
In a study of the effect of college student employment on academic performance, the following summary statistics for GPA were
2 answers
asked by
BOB
925 views
Two analysts each made six determinations of the paracetamol content of the same batch of tablets. The results are shown below:
A
2 answers
asked by
m
889 views
A researcher has collected statistics pretest scores for students representing 3 different age groups
18-30 31-45 45 and up 3 5
2 answers
asked by
Malia
887 views
There were 50 men and 50 women who were randomly selected from a larger population.
•A t-test was conducted to compare men and
2 answers
asked by
Diana
860 views
4. A college student is interested in whether there is a difference between male and female students in the amount of time spent
1 answer
asked by
Ashley
871 views
Parametric procedures of quantitative analysis make an underlying assumption that...?
A. Dichotomous variables have been
2 answers
asked by
Pat
823 views
The mean length of a work week for the population of workers was reported to be
39.2 hours. Suppose that we would like to take a
2 answers
asked by
frances
821 views
An automotive manufacturer has selected 10 car seats to study the Rockwell hardness of the seat recliner
mechanism. A sample of 8
2 answers
asked by
t
799 views
5. The table below shows Psychology exam scores, Statistics Exam scores, and IQ scores for a random sample of students. What can
2 answers
asked by
shirley
846 views
The table below shows the smoking habits of a group of asthma sufferers
NS OS RS HS T M 358 32 90 48 528 W 307 35 77 44 463 T 665
2 answers
asked by
Eduardo Ortega
825 views
A teacher gives each of five students a box that contains 25 red balls, 25 blue balls, 25 green balls, and 25 purple balls. The
3 answers
asked by
Judy
1,013 views
The regional manager in Exercise 6.10 plans to evaluate the speed of services at five local franchises of the restaurant. For
4 answers
asked by
Josephine
827 views
What are some examples of related data that have 10-25 points each?
1 answer
asked by
t
804 views
A math teacher observes that on the average 3 students came to their 8-9AM class late. The probability 5 students will be late
2 answers
asked by
NARUTO
771 views
a study was conducted of all 1849 students in a certain country.whether the value is parameter or statistics
2 answers
asked by
rahul
723 views
Data were collected, using a sample survey, on the inhabitants of a British town. Among other things, the respondents were asked
3 answers
asked by
mina
723 views
A researcher conducts a t test for dependent means in which it is predicted that there will be a decrease in unemployment from
1 answer
asked by
Anonymous
747 views
In a sophisticated medicine research center, two scales are used for repeated weighing of the same item. If the true weight of a
1 answer
asked by
Ashley
709 views
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