Question

In: Statistics and Probability

Suppose the happiness of six teams has been measured on a scale that has a normally...

  1. Suppose the happiness of six teams has been measured on a scale that has a normally distributed population with a standard deviation of 3. Just for fun, you sample 33 six teams from this population and obtain a mean happiness of 23.95 and a standard deviation of 3.5006. Using an alpha value of α = 0.01, is this observed mean significantly different than an expected happiness of 22? (Two Tailed)
  1. State Null and Alternate Hypotheses.
  2. Apply test.
  3. Write your conclusion using critical value approach and p value approach.
  4. Construct a 95% confidence interval to estimate the population mean.  Write and justify your conclusion.

Solutions

Expert Solution

orchestra answered 1 year ago
Next > < Previous

Related Solutions

Suppose we wanted to compare the somatic complaints (as measured on a scale known as the...
Suppose we wanted to compare the somatic complaints (as measured on a scale known as the Physical Symptom Survey or PSS) of three groups of people: nonsmokers, smokers, and people who recently quit smoking. Using the following data for PSS scores, do a one-way ANOVA to test the hypothesis that the population means are equal: Nonsmokers Smokers Quitters 19 26 37 23 29 32 17 22 27 20 30 41 26 23 38 What are the means for the three...
Suppose that the gain from a portfolio during six months is normally distributed with a mean...
Suppose that the gain from a portfolio during six months is normally distributed with a mean of $3.5 million and a standard deviation of $12 million. Calculate and interpret the VaR of the portfolio with a 99% confidence level.
You are riding on a Ferris wheel while standing on a scale. The scale normally reads...
You are riding on a Ferris wheel while standing on a scale. The scale normally reads 1500 lbs. (Did I mention you're a robot made of incredibly heavy metal?) While you are riding, you notice your weight on the scale changing. At the TOP of the Ferris wheel, you weigh only 1430 lbs. The Ferris wheel has a diameter of 230 m. How much time does it take the Ferris wheel to make one full turn? (Give answer in seconds).
Professor Galant  has been conducting a study on the relationship between happiness and chocolate consumption. In her...
Professor Galant  has been conducting a study on the relationship between happiness and chocolate consumption. In her study, she selects 15 caouples pairs and evaluates the change in happiness, on a scale of 1 to 100, after eating a chocolate bar She hired you as a statistical consultant.  Analyze these data and draw the most reasonable conclusion(s) What scientific question(s) are you trying to answer? What statistical method(s) have you used, and why? List your null hypotheses and alternate hypotheses, if any....
a busy social life has been found to increase happiness in participants who are experincing low...
a busy social life has been found to increase happiness in participants who are experincing low levels of stress, but decrease happoiness in participants who are experiencing high levels of stress .what is this an example of? a)moderation b)mediation c)neither moderation nor mediation d)semi partial correlation 2)what is the sobel test used for? A) To acssess the significant of the direct effect in moderation analysis .B) To assess the significant in mediation. C) to assess the significant of the interaction...
Suppose the return for stocks A and B for the last six months have been the...
Suppose the return for stocks A and B for the last six months have been the following: A. B 3,2% 4,7% 4,1% 2,0% -2,7% 1,4% -0,5% -0,8% 6,7% 2,7% 5,5% -1,2% a. What is the expected return, variance and standard deviation of the two stocks? What is the covariance and correlation among them? b. What would the return and standard deviation of a portfolio that is 30% invested in stock A and 70% invested in stock B be?
What is been measured in the denominator of one-sample t test? What is been measured in...
What is been measured in the denominator of one-sample t test? What is been measured in the denominator of independent samples t test? What is been measured in the denominator of repeated measures t test?
2) A happiness survey with normally distributed scores with mean 5.5 and standard deviation 2.3 was...
2) A happiness survey with normally distributed scores with mean 5.5 and standard deviation 2.3 was administered to IT workers in healthcare. a) Find the probability that a randomly selected participant’s response was greater than 5. b) Find the probability that a randomly selected participant’s response was between 4.5 and 6.5. c) Find the probability that the mean of a sample of 16 selected participant’s response was between 4.5 and 6.5.
2) A happiness survey with normally distributed scores with mean 5.5 and standard deviation 2.3 was...
2) A happiness survey with normally distributed scores with mean 5.5 and standard deviation 2.3 was administered to IT workers in healthcare. a) Find the probability that a randomly selected participant’s response was greater than 5. b) Find the probability that a randomly selected participant’s response was between 4.5 and 6.5. c) Find the probability that the mean of a sample of 16 selected participant’s response was between 4.5 and 6.5.
We usually assume that your weight as measured by a scale is equal to the magnitude...
We usually assume that your weight as measured by a scale is equal to the magnitude of the gravitational force that the earth exerts on you. Because of the rotation of the earth, however, the scale reading can actually be slightly different from your true weight. Which of the following accurately describes this effect?
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT