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One-sample t-test
Page 2
Questions (215)
A company sent seven of its employees to attend a course in building self-confidence. These employees were evaluated for their
3 answers
asked by
ayno
1,197 views
A machine is designed to fill jars with 16 ounces of coffee. A consumer suspects that the machine is not filling the jars
2 answers
asked by
Dianne
755 views
Hi there, I am doing my statistics homework and am having trouble with a few problems. I sincerely appreciate any help I
2 answers
asked by
Chris
528 views
An insurance company is reviewing its current policy rates.when originally setting the rates they believed that the average
2 answers
asked by
Ras
837 views
The Principal of SACRO Primary is concerned that the average speed of cars travelling along Princess Road exceeds the
3 answers
asked by
James
452 views
The Average Score in the entrance examination in MSHS is 80 with a standard deviation of 40 students was taken from this
1 answer
asked by
Ron
473 views
A researcher wants to know if the mean Body Mass Index (BMI) among a group of college students differs from 22. He took a random
1 answer
asked by
Khoo
467 views
A manufacturer of a new car claims the typical car will average 32 mpg of gasoline. An independent consumer group is skeptical
1 answer
asked by
Serena P.
700 views
Employees in a large company are entitled to 15-minute water breaks. A random sample of the duration
of water breaks for 10
1 answer
asked by
Stat
622 views
a packing device is set to fill detergent powder packet with a mean weight of 5 kg . The standard deviation is known to be 0.01
2 answers
asked by
john
583 views
A random sample has 61 values. The sample mean is 9.9 and the sample standard deviation is 2. Use a level of significance of
2 answers
asked by
Yira f
582 views
A random sample of size 20 drawn from a normal distribution has a sample mean of 8 and a sample standard deviation of 4.
A)
1 answer
asked by
Yira f
668 views
The produce manager of a grocery store claims granny smith apples weight a mean of four ounces. The sample size is 10 apples
2 answers
asked by
LaKesha McCloud
483 views
You wanted to test whether the cereal boxes made by your plant conform to the requirement that they contain 12 oz cereal. You
2 answers
asked by
Namonje
533 views
A group of 10 students have average of GPA of 2.8 with SD of 0.3. Does this group present enough evidence to indicate that the
2 answers
asked by
Anonymous
538 views
Create a one sample t-test comparing the
age of the general population of college students in traditional on-ground universities.
2 answers
asked by
angela
485 views
The manufacturer of Porshe 918 Spyder car claims that their car can go from 0 mph to 60 mph speed in less than 2.5 seconds. To
1 answer
asked by
Steven
395 views
an employment information service reports that the mean annual salary for full time male workers ages 25 to 34 with a bachelor's
2 answers
asked by
Ricky
506 views
You are conducting an experiment to see if a given therapy works to reduce test
anxiety in a sample of college students. A
3 answers
asked by
sai
1,146 views
In a population of over 15,000 patients, the distribution of systolic blood pressure follows the normal curve. Investigators
3 answers
asked by
Anonymous
549 views
I am having a bit of trouble with the top half of the questions. I have an answer below for questions 5-10, is there anyway you
1 answer
asked by
sandra
447 views
Complete the following hypothesis test: Ho: ì = 52, Ha: ì < 52, á = 0.01 using the data below.
43 48 44 48 42 60 54 44 50 35
1 answer
asked by
TOM912
401 views
a professor was curious to whether the students in a very large class she was teaching who turned in their first scored
3 answers
asked by
mike
914 views
Exercise :
A machine is set up such that the average content of juice per bottle equals μ . A sample of 36 bottles yeilds an
2 answers
asked by
yao
557 views
If Ho: μ = 50 and Ha: mu. = 59 and s = 10 what is αlpha if x exceeds 56for n=25
2 answers
asked by
KP
667 views
HA (alternate hypothesis): The mean for the effectiveness of wax for all three brand are not equal. provide the reason for this
10 answers
asked by
SHAY YHO
55 views
a restaurant that bills its house account monthly is concerned that the average monthly bill exceeds $200 per account. A random
1 answer
asked by
HN
344 views
A research psychologist believes that professional athletes tend to be more confident than the typical person. From previous
1 answer
asked by
Kim
388 views
a sample of 16 atm transactions shows a mean transaction time of 67 seconds with a standard deviation of 12 seconds. State the
3 answers
asked by
Anonymous
903 views
"Working Mom’s Journal" reported that the mean time a mother, with her small children, spends in at the convenience store is
1 answer
asked by
Mark Jessen
387 views
1) A potato chip manufacturer has been accused of shortchanging their customers with their 10-ounce bags of potato chips. A
1 answer
asked by
Jaison
506 views
Show all work. Any answer given with just an answer will be counted wrong. Also, Show the graph and shaded region as needed or
2 answers
asked by
Courtland White
550 views
Recall that “very satisfied” customers give the XYZ-Box video game system a rating that is at least 42. Suppose that the
2 answers
asked by
Statistics
846 views
A packaging device is set to fill detergent power packets with a mean weight of 5 Kg. The standard deviation is known to be 0.01
1 answer
asked by
anoop
725 views
Information given is sample mean of 12 for a sample of 26. Sample deviation is 3. Using a .02 level of significance.
H0 u< or
1 answer
asked by
Daniel
411 views
a light bulb manufacture gaurentees that the mean life of a certain type of bulb is at least 875 hours. A random sample of 40
4 answers
asked by
jamie
541 views
A major television network is trying to determine whether to increase or decrease the number of news-based television shows.
2 answers
asked by
Beverly
560 views
An employer claims that full time employees have a mean income of $35,000. A sample of 200 employees were considered. Their mean
1 answer
asked by
Sammy Jo
390 views
The ball team was accused of cheating their soda drinkers by not putting enough soda in their 12 oz. cups. 15 cups were selected
1 answer
asked by
shirley
388 views
An auditor reviewed 25 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket
2 answers
asked by
Sami
527 views
Here are heart rates for a sample of 30 students before and after a class break. At α = .05, was
there a significant difference
2 answers
asked by
Gary
482 views
A recent article in a computer magazine suggested that the mean time to fully learn a new software program is 40 hours. A sample
2 answers
asked by
slayer
706 views
: Human Resources took a survey and found that the average commute time one way is 25.4 minutes. However one of the executives
2 answers
asked by
Adela
550 views
8-A bakery stated that the average number of breads sold daily is 3000. An employee thinks that the actual
value might differ
2 answers
asked by
Judy and group
645 views
A recent article in a computer magazine suggested that the mean time to fully learn a new software program is 40 hours. A sample
3 answers
asked by
Michelle
911 views
A recent article in a computer magazine suggested that the mean time to fully learn a new software program is 40 hours. A sample
2 answers
asked by
Michelle
597 views
Suppose that the average grade for all people who take this course in statistics is 83 with a standard deviation of 3.5. If your
2 answers
asked by
Terra
534 views
You conduct a survey of a sample of 25 members of this year’s graduating marketing students and find that the average GPA is
2 answers
asked by
gail
1,081 views
Test the claim that the mean body temperature is less than 98.6 using a=0.05. assume a sample of 16 yielded a mean of 98.2 with
2 answers
asked by
Sam
1,028 views
Test the claim that the mean body temperature is less than 98.6 using a= 0.05. Assume a smaple of 16 yilded a mean of 98.2 with
2 answers
asked by
Sue
706 views
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Parent Categories (8)
Comparing means
Hypothesis Test
Hypothesis Testing
Significance Testing
Statistical Hypothesis Testing
Statistics and Data Analysis
Student's t-test
Testing of Means