A sample of 263 students who were taking online courses were asked to describe their overall impression of online learning on a scale of 1-7 with 7 representing the most favorable impression. The average score was 5.53 and the standard deviation was 0.92. Construct a 95% confidence interval for the mean score. Round your final answers to 3 decimal places.

Q: Ninety-four percent of students said that cash is their top choice for a graduation gift. If 75…

A: It is given that sample size (n) is 75and the sample proportion value is 0.94.

Q: On a nationwide math test, the mean was 75 and the standard deviation was 7. If Roberto scored 70,…

A: The z score indicates how many standard deviations that a data points away from the mean. It can be…

Q: A survey was conducted that asked 1008 people how many books they had read in the past year. Results…

A: Given X-bar=11.8 S=16.6

Q: In a boys' school, there are 40 students in grade 9. The weight of the students was measured. The…

A: It is given asMean, μ = 55Standard deviation, σ = 2.5

Q: On a nationwide math test, the mean was 51 and the standard deviation was 4. If Roberto scored 70,…

A:

Q: A group of students wrote an entrance Math exam and the scores were normally distributed. The mean…

A: The scores were normally distributed with mean 750 and standard deviation 95 μ=750σ=95 Z-score is…

Q: Molly earned a score of 940 on a national achievement test. The mean test score was 850 with a…

A:

Q: The mean and standard deviation of players' heights for the 2003 NBA season were H 79.5 inches and o…

A: A z-score (also called a normal score) gives an indication of how far from the mean a data point is.

Q: A successful basketball player has a height of 6 feet 2 ​inches, or 188 cm. Based on statistics from…

A: Given the Z score of height of basket ball player is 1.95. The original height of the basket ball…

Q: Jim and Pat are both taking Calculus. Jim scored 92 on a test in his class. The average on the test…

A: To find: Who actually did better? Include the Z-scores as part of the answer.

Q: parent would spend on their child's birthday gift (use a 99% confidence level). Give your answers to…

A:

Q: Suppose you were told you scored two standard deviation below the mean on a measure where the main…

A:

Q: Executives at a music label surveyed 125 people who actively download music and found that the…

A:

Q: Which is better: A score of 82 on a math test with a mean of 70 and a standard deviation of 8, or A…

A: Given : A score of 82 on a math test with a mean of 70 and a standard deviation of 8, A score of 82…

Q: The tallest living man at one time had a height of 246 cm. The shortest living man at that time had…

A: The provided information is  µ=170.86 cmσ=8.41 cmThe z score for tallest living man at one time time…

Q: What would a histogram look like if the mean is 50 the median is 50 and the standard deviation is…

A: Mean is 50.Median is 50.Standard deviation is 1.6.

Q: Sheila's Z-score is 2.15 on a classroom examination. The mean score for the class is 65, the range…

A:

Q: thirty randomly selected students took the calculus final. if the sample mean was 91 and the…

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Q: Neil scored 67 on his calculus class final and was devastated by his failing grade. His class…

A: From the provided information, The mean and standard deviation of Neil class are as follow: Mean (µ)…

Q: you take a sample in equal 25 of test scores from a population. The sample mean is 38, and the…

A:

Q: percentile rank on each exam? Percentile rank of ACT  Percentile rank of SAT  On which exam did…

A: The mean and standard deviation for the ACT are 18 and 7. Carla scored 31 on her ACT. The value of…

Q: Which student received the highest grades from the quizzes?

A: here given , Jasmine, Jamal, and Jessa all got the same mean grade (2.7) on their quizzes last…

Q: The principal randomly selected six students to take an aptitude test. Their scores were: 88.0 84.1…

A: Solution: Let X be the score. The given data is 88, 84.1, 74.9, 83.2, 83.7 and 85.5.

Q: Alicia scored a 70 on her psychology quiz, but the class as a whole averaged a 40. If the standard…

A: From the provided information, Population mean (µ) = 40 Standard deviation (σ) = 10 Let X be a…

Q: Please explain. In a survey, 11 people were asked how much they spent on their child's last…

A: Given: x¯=$41s=$4n=11

Q: When 370 junior college students were surveyed, 145 said they have a passport.  Construct a 95%…

A: Zcrit = 1.96

Q: The mean critical reading score for seniors who took the SAT in 2018 was 536. If the standard…

A: Given Mean μ=536, standard deviation σ=115  X=435

Q: Valentina obtained a score of 75 in a science exam and 90 on her English exam. on which test did she…

A:

Q: A successful basketball player has a height of 6 feet 4 ​inches, or 193 cm. Based on statistics from…

A:

Q: The mean grade of Adrian in the final examination in mathematics was 85 and the standard deviation…

A: For mathematics :mean(μ)=85standard deviation(σ)=7For sciencemean(μ)=89standard deviation(σ)=13

Q: On which test did he do better relative to the rest of the class?

A: For history test, mean= 70, SD=7 and Rahul's score is X=79 For biology test, mean=70, SD=9 and…