Math

StatisticsQ&A LibraryA random sample of 19 health maintenance organizations (HMOS) was selected. For each HMO, the co-payment (in dollars) for a doctor's office visit was recorded. The results are as follows:5, 6, 12, 10, 6, 8, 8, 11, 5, 9, 10, 12, 6, 12, 7, 9, 10, 8, 7Under the assumption that co-payment amounts are normally distributed, find a 95% confidence interval forthe mean co-payment amount in dollars. Then complete the table below.Carry your intermediate computations to at least three decimal places. Round your answers to one decimalplace. (If necessary, consult a list of formulas.)What is the lower limit of the confidenceinterval?What is the upper limit of the confidenceAainterval?Question

Asked Mar 14, 2020

6 views

Step 1

Step 2

The column above represents the sample data.

Sample size (*n*) = 19

The sample mean and sample standard deviation can be computed from the sample data as:

Step 3

Since, sample size is less than 30 and population standard deviation is not known therefore, t-would be applicable.

T-critical value at 0.05 significance level with 18 degrees of freedom is –

t-critical value is taken from the t-able.

Thus, the 95% confidence interval can be computed as:

...Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: Replacement Why does the bootstrap method require sampling with replacement? What would happen if we...

A: In the bootstrap method, the sample should be taken with a replacement.

Q: Vr'stoma hasanover invies Joa pare: her masher, 2 aunts, 3uneks, 3 brothers, imale s 1g reladives hr...

A: Total 13 relatives are invited Her Mother 4 aunts 2 uncles 3 brothers 1 male cousin and 2 female cou...

Q: The amount of time a service technician needs to change the oil in a car is uniformly distributed be...

A: D. P(x > 19): The value of P(x > 19) is calculated as follows:

Q: 08:Pretest 08:Hypothesis Testing 15. Formulate the indicated conclusion in nontechnical terms. Be su...

A: It is given that the null hypothesis is rejected.

Q: What is the minimum number of passengers to contract the virus?

A: The binomial distribution gives the probability of a number of successes out of n trials in a series...

Q: Testing for a Linear Correlation. In Exercises 13–28, construct a scatterplot, and find the value of...

A: First we need to calculate correlation coefficient between president and opponent. After that we hav...

Q: Statistics Find the mean, median, standard deviation, and range. Are the results statistics or param...

A: Given that, -30 -23 14 -21 -32 11 -23 28 103 -19 -5 -46

Q: Testing for a Linear Correlation. In Exercises 13–28, construct a scatterplot, and find the value of...

A: Note: Hey there, thank you for the question. Since the table is not given, we calculated the p-value...

Q: The values listed below are waiting times (in minutes) of customers at two different banks. At Bank...

A: Bank A: The sample variance of bank A is calculated using Excel as follows: