In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1= not attractive; 10 = extremely attractive). Construct a confidence interval using a 90% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females? 7, 9, 3, 8, 6, 5, 6, 9, 9, 10, 5, 8 ¤ What is the confidence interval for the population mean u? (Round to one decimal place as needed.)

Question
In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1= not attractive;
10 = extremely attractive). Construct a confidence interval using a 90% confidence level. What do the results tell about the mean attractiveness ratings of the population
of all adult females?
7, 9, 3, 8, 6, 5, 6, 9, 9, 10, 5, 8 ¤
What is the confidence interval for the population mean u?
(Round to one decimal place as needed.)
Expand
Transcribed Image Text

In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1= not attractive; 10 = extremely attractive). Construct a confidence interval using a 90% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females? 7, 9, 3, 8, 6, 5, 6, 9, 9, 10, 5, 8 ¤ What is the confidence interval for the population mean u? (Round to one decimal place as needed.)

Expand

Expert Answer

Want to see the step-by-step answer?

Check out a sample Q&A here.

Want to see this answer and more?

Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*

*Response times may vary by subject and question complexity. Median response time is 34 minutes for paid subscribers and may be longer for promotional offers.
Tagged in
Math
Statistics

Other

Related Statistics Q&A

Find answers to questions asked by students like you.

Q: According to the Central Limit Theorem, the sampling distribution of the mean will be approximately ...

A: Normal distribution is most widely used in statistics. It is of utmost importance in today's world. ...

Q: A quality control company was hired to study the length of meter sticks produced by a certain compan...

A: Given: μ=100.07  & σ=0.11        Assuming that the population is distributed normally, the requi...

Q: The average amount of sleep students get a night is normally distributed with a mean of 6.5 hours an...

A: Draw the normal curve and shade the area to the left of z=-0.75. Refer to Standard normal table/Z-t...

Q: For large simple random samples from any population, the standard error of the sampling distribution...

A: Click to see the answer

Q: A researcher studying public opinion of proposed Social Security changes obtains a simple random sam...

A: Click to see the answer

Q: A ball is drawn randomly from a jar that contains 9 red balls, 2 white balls, and 2 yellow balls. Fi...

A: Given: Red Balls = 9 White Balls = 2 Yellow Balls = 2  

Q: A recent study of 2700 children randomly selected found 21​% of them deficient in vitamin D. ​ Const...

A: Given that, 2700 children randomly selected found 21​% of them deficient in vitamin D. n=2700p^=0.21...

Q: Which of the following scenario is an example of a pretest–posttest design? Group of answer choices ...

A: Pretest posttest design: It is an experiment where measurements are taken before and after a treatme...

Q: Problem 1: A sample of 100 bulbs of brand A gave a mean lifetime of 1200 has with a S.D. of 70hrs, w...

A: Given: The descriptive statistics is as follows   Sample size Sample mean Sample standard deviati...

Q: Suppose that, in 1995, the weight of 16-year old males in the United States was normally distributed...

A: Thank you for posting this question ! You have correctly chosen that a z test needs to be performed ...

Q: For data that is not normally distributed we can't use z-scores. However, there is an equation that ...

A: a. Required percentage will be given by as follows using chebychev's inequality: Px-μ≤2.1σ≥1-1σ2Px-μ...

Q: Researchers at the Mayo Clinic have studied the effect of sound levels on patient healing and have f...

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a...

Q: Measurements of the weights of a random sample of 400 ball bearings made by a certain machine one we...

A: Click to see the answer

Q: A company believes that percentage of resident in BSP own vehicle is 60% or less. Sales manager disa...

A: Given information- Population proportion, p = 0.60 Sample size, n = 250 Significance level, α = 0.1 ...

Q: For a sample of n=65​, find the probability of a sample mean being greater than 228 if μ=227 and σ=5...

A: Given information- Sample mean, µ = 227 Sample standard deviation, σ = 5.6 Sample size, n = 65 Let, ...

Q: Let the sample mean of a set of 20 data points be 30. If it is discovered that a data point having v...

A: Click to see the answer

Q: Determine and o, from the given parameters of the population and sample size. H= 86, o = 16, n= 64

A: The mean of the sampling distribution of these sample means (µxbar) is obtained below: From the give...

Q: Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better ...

A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts.  In case yo...

Q: Women athletes at a certain university have a long-term graduation rate of 67%. Over the past severa...

A: Given: Population proportion (p) = 0.67 The hypotheses can be constructed as: H0: p = 0.67 H1: p &lt...

Q: Need help figuring out the last question on this problem. Thanks so much.

A: The given information is: X~Nμ=21, σ2=2.422 Sample size(n)=45 Further,  ∑X~Nnμ=945, nσ2=263.5380

Q: The area of the shaded region is | (Round to four decimal places as needed.)

A: The z-score corresponding to the IQ score of 70. 

Q: For numbers 6-10, use the data in the table below that summarizes results from a clinical trial of a...

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for y...

Q: Statistics Question

A: Given information- Sample size, n = 15 Sample mean, x-bar = 34 minutes Sample standard deviation, s ...

Q: Show that the estimates βˆ1 = 1.572 and βˆ2 = 1.357 used in the first experiment ofTable 3.1 are in ...

A: Solution: yi xi xi^2 xiyi 4 1 1 4 5 4 16 20 7 5 25 35 12 6 36 72 Total = 28 16 78 131 ...

Q: A random sample is to be selected from a population that has a proportion of successes  p = 0.66.  D...

A: The mean of the sampling distribution of the sample proportion (). The standard deviation of the sa...

Q: Claim: Most adults would erase all of their personal information online if they could. A software fi...

A: State the hypotheses. That is, there is no evidence that the most of the adults would erase all of ...

Q: Calculate the variance and standard deviation for the following sample of scores: 7, 2, 4, 6, 4, 7, ...

A: Number of samples (n) = 8 7 2 4 2 -3 9 4 -1 1 6 1 1 4 -1 1 7 2 4 3 -2 4 7 ...

Q: The clinical testing of drugs involves many factors. For example, patients that have been given plac...

A: Percentage = 100*Proportion We are given only one sample of size n=500, so we will not be using two ...

Q: How do you solve part 2?

A: The joint probability mass function of the discrete random variables X and Y is given as:       ...

Q: The average cost per household of owning a brand new car is P5,000. Suppose that we randomly selecte...

A: Click to see the answer

Q: Suppose you are in a restaurant and the menu is as follows: 5 beverages, 7 appetizers, 10 main cours...

A: Combinations: The number of combinations of r items selected from n items is, nr=n!n-r!r! A restaura...

Q: Company XYZ knows that replacement times for the DVD players it produces are normally distributed wi...

A: Mean = 9.8 Standard deviation = 1.8

Q: Body Weights: In a certain population, body weights are normally distributed with amean of 152 pound...

A: Given information: μ=152, σ=26 Confidence level= 96% Margin of error= 4 Determine the z-critical val...

Q: Ackerman and Goldsmith (2011) found that students who studied text from printed hardcopy had better ...

A: Given Information :  Ackerman and Goldsmith (2011) found that students who studied text from printed...

Q: Assume the average price for a movie is ​$7.35. Assume the population standard deviation is ​$0.44 a...

A: Click to see the answer

Q: The average amount of money spent for lunch per person in the college cafeteria is $5.82 and the sta...

A: (a)

Q: In 1940 the average size of a U.S. farm was 174 acres. Let's say that the standard deviation was 51 ...

A: Click to see the answer

Q: The college physical education department offered an advanced first aid course last summer. The scor...

A: Given data, Robert   1.26 Juan      1.68 Haley    −1.90 Joel       0.00 Jan       −0.72 Linda    1.7...

Q: A standardized memory test has a mean of µ = 100 and a standard deviation of σ= 10. Answer the follo...

A: Since you have asked multiple question, we will solve the first question for you. If you want any sp...

Q: The first blank for both questions is: "estimate of the standard ('distance' or 'score' or 'mean')" ...

A: Blank 1: distance Blank 2: sample mean difference Blank 3: population mean difference

Q: Suppose that Randy is an analyst for the bicyling industry and wants to estimate the asking price of...

A: Since the population standard deviation is unknown, t distribution can be used for the computation o...

Q: Let X = {Email, In Person, Instant Message, Text Message}; P(Email) = 0.06 P(In Person) = 0.55 P(Ins...

A: From the provided information, The probability distribution table can be constructed as: X Ema...

Q: The dean of a college wants to use the mean of a random sample to estimate the average time students...

A: The sample size is obtained below: From the given information, the margin of error (ME) is 5 minutes...

Q: According to a research​ institution, the average hotel price in a certain year was ​$97.27. Assume ...

A: Given: Average hotel price by research institution μ=$97.27 Population standard deviation σ=$21.00 S...

Q: Suppose an electric-vehicle manufacturing company estimates that a driver who commutes 50 miles per ...

A: Click to see the answer

Q: Suppose that 57% of people own dogs. If you pick two people at random, what is the probability that ...

A: Since owning a dog is independent between two people, Use the multiplication rule

Q: marketer belive that 92% of adult in germany own a cell phone . a cell phone manufacture believes th...

A: Given: p0=0.92x=174n=200p⏜=174200p⏜=0.87α=0.05