Question

Asked Nov 19, 2019

2 views

Suppose a new Director of Health Services for a district claims that she will reduce the average speed of emergency response to less than 30 minutes, which is thought to be the average response time with the current Director. There are no past records; so the actual standard deviation of such response times cannot be determined. Thanks to this promise, careful records are now kept. The response times for the first month are 26, 30, 28, 29, 25, 28, 32, 35, 24, and 23 minutes. Using the .05 level of significance, did she keep her promise? Explain your answer. **Do not show full working steps**.

Step 1

The one sample t-test is performed in MINITAB for the given data.

Step-by-step procedure to perform one sample t-test using MINITAB is given below:

- Go to
**Stat**>**Basic statistics**>**1 sample t**. - Select the entered variable
**Speed**. - Click on
**Perform hypothesis test**. - Enter
**Hypothesized mean**as**30**. - Go to
**options**and enter**confidence level**as**0**. - I...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: Given that there are 30 students in a class taking an exam. The average for Past years is μ0=86, σ= ...

A: It is given that the population standard deviation is 7 and the true mean is 87.7. Also, the test cl...

Q: The costs of various sailboats of varying lengths are xx, length in feetyy, thousands of dollars.......

A: Given information isx is denoted by length in feety is denoted by thousands of dollars($)The best fi...

Q: 15 O

A: Introduction:Suppose there are n observations, the values of which are denoted by x1, x2, …, xn. The...

Q: The scores on a standardized test are normally distributed with a mean of 95 and standard deviation ...

A: Standard normal distribution:The standard normal distribution is a special case of normal distributi...

Q: 56% of students entering four-year colleges receive a degree within six years. Is this percent diffe...

A: Note:Hey there! Thank you for the question. However, you have posted multiple questions together. He...

Q: 10.Was your obtained t-value positive or negative? Would it matter either way? With your discussion ...

A: 10.From the results, the test statistic is 5.45. This positive.The positive or negative value is not...

Q: The average price of a college math textbook is $174 and the standard deviation is $23. Suppose that...

A: (b)The conditions for the z-distribution is appropriate as given below:If the sample size is larger ...

Q: In recent years more people have been working past the age of 65. In 2005, 27% of people aged 65-69 ...

A: It is given that 27% of people aged 65-69 worked. Therefore, population proportion; P is 0.27. It is...

Q: A newspaper provided a "snapshot" illustrating poll results from 1910 professionals who interview j...

A: Introduction:The 100 (1 – α) % confidence interval for the population proportion, p is: (p̂ – (zα/2...