The number of hours of reserve capacity of 10 randomly selected automotive batteries is shown to...

The number of hours of reserve capacity of 10 randomly selected automotive batteries is shown to the right.1.73

1.85

1.56

1.64

1.71

1.98

1.32

1.51

1.46

2.01

Assume the sample is taken from a normally distributed population. Construct 80% confidence intervals for (a) the population variance sigmasquared and (b) the population standard deviation sigma.

Expert Solution

The solution is done showing all steps with calculations and required explanations. For your better understanding, a chi square table is also attached. Hope you can understand and appreciate the work.

chi square table -

orchestra answered 2 years ago

The number of hours of reserve capacity of 1010 randomly selected automotive batteries is shown to...

The number of hours of reserve capacity of 1010 randomly selected automotive batteries is shown to the right. 1.791.79 1.861.86 1.581.58 1.691.69 1.731.73 1.951.95 1.371.37 1.551.55 1.421.42 2.052.05 Assume the sample is taken from a normally distributed population. Construct 9595% confidence intervals for (a) the population variance sigmaσsquared2 and (b) the population standard deviation sigmaσ. (a) The confidence interval for the population variance is (nothing,nothing). (Round to three decimal places as needed.)

The numbers listed are hours of reserve capacity for 10 randomly selected automotive batteries. Assume the...

The numbers listed are hours of reserve capacity for 10 randomly selected automotive batteries. Assume the sample is taken from a normally distributed population. Construct 80% confidence intervals for (a) the population variance (σ^2) and (b) the population standard deviation (σ). 1.71 1.93 1.87 1.39 1.52 1.53 1.67 1.44 1.76 2.08 If you could show step by step, that would be awesome! I tried a previous question like this the way I was shown in my textbook but I couldn't...

The number of visitors to the historic Museum for 25 randomly selected hours is shown.

The number of visitors to the historic Museum for 25 randomly selected hours is shown.15 53 48 19 38 86 63 98 79 38 26 39 67 89 62 28 35 54 88 7631 47 53 41 68.Exercise 3You may use your calculator or excel to compute:The sample mean, sample variance and sample standard deviationWhat is the Coefficient of variation?What are the range of values that are within two standard deviation of the mean?How many data values are within this...

The number of visitors to the Historic Museum for 14 randomly selected hours is shown. 9...

The number of visitors to the Historic Museum for 14 randomly selected hours is shown. 9 30 30 31 35 36 37 37 39 53 55 63 64 95 Identify the five-number summary and the interquartile range (IQR)? Min : Q1 : MD: Q3 : Max : IQR: B.Construct a boxplot for the data? C.comment on the shape of the distribution. D.Determine if there are any outliers?

The number of visitors to the historic Museum for 25 randomly selected hours is shown. 15 ...

The number of visitors to the historic Museum for 25 randomly selected hours is shown. 15 53 48 19 38 86 63 98 79 38 26 39 67 89 62 28 35 54 88 76 31 47 53 41 68. Exercise 1 What is the sample size? Is the variable qualitative or quantitative? Is the variable discrete or continuous? What is the level of measurement? Exercise 2 In order to organize the following data in to 5 classes: What is...

Freud experimented with randomly selected rats and recorded the number of hours it took mice to...

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Randomly selected students in a statistics class were asked to report the number of hours they...

Randomly selected students in a statistics class were asked to report the number of hours they slept on weeknights and on weekends. At α = 0.05. Can it be claimed that the scores on 2 tests are correlated on 0.01 significance level? Student #: 1 2 3 4 5 6 7 8 Test 1: 67 88 76 88 91 95 79 71 Test 2: 69 78 76 84 86 96 70 68

The data below are scores of 8 randomly selected statistic students, and the number of hours...

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The table below gives the number of hours ten randomly selected students spent studying and their...

The table below gives the number of hours ten randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, yˆ=b0+b1x, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line...

The table below gives the number of hours seven randomly selected students spent studying and their...

The table below gives the number of hours seven randomly selected students spent studying and their corresponding midterm exam grades. Using this data, consider the equation of the regression line, yˆ=b0+b1x, for predicting the midterm exam grade that a student will earn based on the number of hours spent studying. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line...

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