For a population with µµ = 48 and ơo = 8, find the X value that corresponds to each of the following z-scores: A. 0.50 В. 2.00

Researchers determined that 60 Kleenex tissues is the average number of tissues used during a cold. Suppose a random sample of 100 Kleenex users yielded the following data on the number of tissues used during a cold: x = 52 and s= 22. Suppose the alternative we wanted to test was H₁ -1.9842 d. reject H if t > 1.6604 0 if t > 1.9842 or Z< -1.9842 e. reject H if t < -1.9842

The label on a 200 gram chocolate bar says the chocolate bar has exactly 370 calories. However, it is believed that the company selling the chocolate bar is intentionally misrepresenting the caloric information to be smaller than it actually is. We would like to check whether the calorie information is correct as labelled or if the company is putting a smaller number on the label. Let µ be the average number of calories in a bar. Which option in the picture tests is most sensible test for µ?

1. Consider a test of H0: u=4. For the following case, give the rejection region for the test in terms of the z-statistic: Ha:u<4, a=.1  a. z>-1.28 b.z<1.645 c. z<-1.645 d. z<-1.28 2. Consider a test of H0:u-9. For the following case, give the rejection region for the test in terms of the z-statistic: Ha does not equal 9, a=.10 a. z>1.28 b. the absolute value of z >1.645 c. the absolute value of z >1.28 d. z>1.645 3.  Consider a test of H0: u=55 versus Ha: u<55 performed. Make the appropriate conclusion for the given situation:  z-value=-1.75, a=.05, p-value=.0401. a. reject H0 b. fail to reject H0 4.  Consider a test of H0: u=40 versus Ha: u>40 performed. Make the appropriate concolusion for the given situation: z=-2.5, a=.01, p-value=.0062. a. reject H0 b. fail to reject H0

The edge roughness of slit paper products increases as knife blades wear. Only 1% of products slit with new blades have rough edges, 3% of products slit with blades of average sharpness exhibit roughness, and 5% of products slit with worn blades exhibit roughness. If 25% of the blades in manufacturing are new , 60% are of average sharpness, and 15% are worn , what is the proportion of products that exhibit edge roughness? Let R = edge roughness N = new blades A = blades with average sharpness W = worn blades What are the mathematical notation for the following values: 1% = 3% = 5% = 25% = 60%= 15% = Express the question in mathematical notation; The proportion of products that exhibit edge roughness* = *Express in rational number with 2 decimal places.

Find the z-score corresponding to a score of X = 45 μ = 40 and σ = 20 μ = 40 and σ =10 μ = 40 and σ = 5 μ = 40 and σ = 2

The amount of pollution produced by cars was measured for cars using gasoline containing different amounts of lead.   A. Independent B. Dependent

Roy ‘s Texaco wants to keep the price of its unleaded gasoline competitive with that of other stations in the area. Roy’s is currently charging $1.29 per gallon. To check that the average price for this gasoline for all stations within a 15 mile radius is higher than his price, Roy randomly samples the price of unleaded gasoline at ten stations located in this area. He obtains the following data for the price per gallon (in dollars): 1.7, 1.5, 2.6, 2.2, 2.4, 2.3, 2.6, 3.0, 1.4, 2.3 Set up the appropriate hypotheses and test them using a significance level of α= .05

SS and SS between for the following 4. Calculate SS total within set of data: Treatment 1 Treatment 2 Treatment 3 n = 10 n = 10 n = 10 N = 30 G = 60 T = 10 T = 20 T = 30 %3D SS = 27 SS = 23 EX = 206 SS = 16 %3! %3! %3D