Hypothesis Testing I-sample means 1) Previous studies have shown that urban bus drivers have an extremely...

Hypothesis Testing I-sample means

1) Previous studies have shown that urban bus drivers have an extremely stressful job. Intervantion programs pput into place to imporve the conditions of bus drivers and their riders have been scheduled for implementation Prior to the intervention the following blood pressures were taken. Normal diastolic blood pressure averages 80 mm Hg. Data: { 95, 58, 99, 81, 85, 81, 84, 77, 79, 100, 83, 89, 73, 79, 80, 90, 74, 79, 76, 65, 91, 88, 83, 90, 93, 69, 89, 95, 80, 70, 66, 94, 90, 77, 81, 75, 95, 73, 63 } N=39

Facts Before you begin: be sure to descide on the distribution you'll use to test Also, find appropriate mean and Sd

b) Find the 90% confidence interval for mean diastolic blood pressure of the drivers

c) At the .10 = alpha (significance) level, determine if the data provide sufficient evidence that the mean DBP of bus drivers exceeds the normal (80 mm hg).

Hypotheses:

Methodology/Calculations

Check conditions for the distribution you have chosen

Find critical value and test statistic

Conclusions: Complete Sentences

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

Discuss The Central Limit Theorem and how it is used hypothesis testing for sample means and...

Discuss The Central Limit Theorem and how it is used hypothesis testing for sample means and sample proportions.

1. When we conduct hypothesis testing with proportions, we have a sample size, n, and a...

1. When we conduct hypothesis testing with proportions, we have a sample size, n, and a number of successes, x. We compare our sample information to a previously collected population proportion and perform a hypothesis test to determine whether to retain or reject the null hypothesis. Suppose we collect n = 100 data points and find that of the 100 people sampled, x = 15 are left handed. We are then asked to perform a hypothesis test to determine whether...

1. When we conduct hypothesis testing with proportions, we have a sample size, n, and a...

1. When we conduct hypothesis testing with proportions, we have a sample size, n, and a number of successes, x. We compare our sample information to a previously collected population proportion and perform a hypothesis test to determine whether to retain or reject the null hypothesis. Suppose we collect n = 100 data points and find that of the 100 people sampled, x = 15 are left-handed. We are then asked to perform a hypothesis test to determine whether there...

Previous studies have shown that Alzheimer's patients who also take beta-blockers tend to see a slower...

Previous studies have shown that Alzheimer's patients who also take beta-blockers tend to see a slower decline in their mental function. a) Why would overstimulation of AMPA receptors cause short-term memory deficits? b) Alzheimer’s is associated with neuron death. Why would overstimulation of AMPA receptors cause neurons to die? c) Previous studies had found that blocking the AMPA receptor alleviates the misfiring caused by amyloid plaques in the brain. Why wouldn’t it be a useful strategy to...

An analysis is interested in testing whether four population have equal means. The following sample data...

An analysis is interested in testing whether four population have equal means. The following sample data have been collected from population that are assumed to be normally distributed with equal variance: S1 S2 S3 S4 9 12 8 17 6 16 8 15 11 16 12 17 14 12 7 16 14 9 10 13 You should use the output information in the following manner to answer the question. Calculate the means and standard deviations. Run the appropriate analysis using...

D. 1. A sample of size 16 is used in testing the null hypothesis that μ...

D. 1. A sample of size 16 is used in testing the null hypothesis that μ > 100. The sample results indicate that = 96 and s = 4. Test the null hypothesis using a significance level of .05. 2. What does the significance level tell us? That is, precisely what is it that has a probability of less than .05? Be specific.

Hypothesis Testing T-TEST for a mean I CLAIM HEIGHT DOES NOT APPEAR TO HAVE AN EFFECT...

Hypothesis Testing T-TEST for a mean I CLAIM HEIGHT DOES NOT APPEAR TO HAVE AN EFFECT ON ACCURACY OF FREE THROWS SHOTS BY BASKET BALL PLAYERS. IF ANYTHING SHORTER PLAYERS TEND TO BE SLIGHTLY MORE ACCURATE. WITH THE DATA BELOW A.FIND THE CRITICAL VALUE B. COMPUTE THE SAMPLE TEST VALUE C.MAKE THE DECISION TO REJECT OR NOT TO REJECT THE NULL HYPOTHESIS D. SUMMARIZE THE RESULTS Player Height Free Throw % Giannis Antetokounmpo 6’11 72.9 Thanasis Antetokounmpo 6’6 50.0 Dragan...

1. In the last few years, many research studies have shown that the purported benefits of...

1. In the last few years, many research studies have shown that the purported benefits of hormone replacement therapy (HRT) do not exist, and in fact, that hormone replacement therapy actually increases the risk of several serious diseases. A four-year experiment involving 4400 women was conducted at 38 medical centres. Half of the women took placebos and half took a prescription drug, a widely prescribed type of hormone replacement therapy. There were x1 = 49 cases of dementia in the...

Use the six-step hypothesis testing where appropriate: 1. You have been told that the mean price...

Use the six-step hypothesis testing where appropriate: 1. You have been told that the mean price of two movie tickets including online service charges, a large popcorn, and two medium soft drinks is $38. Based on a sample of 10 theater chains and assuming a normal distribution, the sample mean was found to be $36.53 and the standard deviation was $3.38. At the 0.05 level of significance, is there enough evidence to indicate that the average price is now less...

If I have 2 samples of limestone, sample 1 weighing 0.732g and sample 2 weighing 0.825g....

If I have 2 samples of limestone, sample 1 weighing 0.732g and sample 2 weighing 0.825g. Both were dissolve do in15ml of 3.00M of HCL. 1.5g of (NH4)2SO4 was added to each sample. Then 20ml of 2.00M NH3OH was added to each sample. How do I calculate the moles of CaCO3 in limestone AND the mass of CaCO3 in limestone ?

Subjects