How likely is the intervention program to be needed?
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Let X be the TSH level in an individual. It is assumed that X has an exponential distribution with a mean of 3 µIU /mL. A sample of 12 workers from a logging company is taken. If more than half of the individuals in the sample have TSH levels greater than 4.8 µUI /mL, an intervention program is carried out with the total number of workers in the company. How likely is the intervention program to be needed?
a) 0,004
b) 0,006
c) 0,086
d) 0,005
e) 0,003
Let X be the TSH level in an individual. It is assumed that X has an exponential distribution with a mean of 3 µIU /mL. A sample of 12 workers from a logging company is taken
Here use poission distribution and binomial distribution
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- To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, the Jacobs Chemical Company obtained the following data on the time (in minutes) needed to mix the material. Manufacturer 1 2 3 16 32 22 22 30 21 20 35 25 18 31 24 a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use a=0.05.Compute the values below (to 2 decimals, if necessary). Sum of Squares, Treatment Sum of Squares, Error Mean Squares, Treatment Mean Squares, Error Calculate the value of the test statistic (to 2 decimals). The -value is What is your conclusion? b. At the a=0.05 level of significance, use Fisher's LSD procedure to test for the equality of the means for manufacturers 1 and 3. Calculate Fisher's LSD Value (to 2 decimals). What conclusion can you draw after carrying out this test?A bell-shaped population data has u = 40 and o = 10. By empirical rule 68% of the data lie inside the interval Select one: O a. [30, 50] O b. [20,60] O c[10,70]A population of N=15 scores has ΣX=120. What is the population mean?
- Please show workO myopenmath.com МyOpenMath b Answered: If n=31, ¯xx"(x-bar)=30, and s=10,... | bartleby 2020-2021 School Supply lists / Fourth Grade Netflix Suppose you are a researcher in a hospital. You are experimenting with a new tranquilizer. You collect data from a random sample of 8 patients. The period of effectiveness of the tranquilizer for each patient (in hours) is as follows: Hours 2.8 2.2 2.3 2.5 2.7 3 2.5 2.6 What is a point estimate for the population mean length of time. (Round answer to 2 decimal places) What must be true in order to construct a confidence interval in this situation? Select an answer Construct a 98% confidence interval for the population mean length of time. (Round upper and lower bounds to 2 decimal places.) What does it mean to be "98% confident" in this problem? O 98% of all confidence intervals found using this same sampling technique will contain the population mean time. There is a 98% chance that the confidence interval contains the sample mean time. The…It is thought that a new process for producing a certain chemical may be cheaper than the currently used process. Each process was run 6 times, and the cost of producing 100 L of the chemical was determined each time. The results, in dollars, were as follows: New Process: 51 52 55 53 54 53 Old Process: 50 54 59 56 50 58 Can you conclude that the mean cost of the new method is less than that of the old method?
- 3. Are all employees equally prone to having accidents? To investigate this hypothesis, a researcher looked at a light manufacturing plant and classified the accidents by type and by age of the employee. Accident Type Age Under 25 Sprain Burn Cut 17 5 25 or over 61 13 12 A chi-square test gave a test statistic of 20.78. If we test at a = 0.05 A. there appears to be no association between accident type and age. B. age seems to be independent of accident type. C. accident type does not seem to be independent of age. D. there appears to be a 20.78% correlation between accident type and age. E. the proportion of sprain, cuts, and burns seems to be similar for both age classes.Let X be a random variable that represents red blood cell count (RBC) in millions of cells per cubic millimeter of whole blood. Then X has a distribution that is approximately normal. For the population of healthy female adults, suppose the mean of the X distribution is about 4.84. Suppose that a female patient has taken six laboratory blood tests over the past several months and that the RBC count data sent to the patient's doctor are as follows. 4.2 4.4 4.3 4.1 4.8 4.9 (i) Use a calculator with sample mean and standard deviation keys to find x and s. (Round your answers to two decimal places.) x = s = (ii) Do the given data indicate that the population mean RBC count for this patient is lower than 4.84? Use ? = 0.05. (a) State the null hypotheses H0 and the alternate hypothesis H1 . H0 : ? H1 : ? (b) What is the value of the sample test statistic? (Round your answer to three decimal places.)(c) Compute the P-value. (Round your answer to four…A sample from a normal population with u=50 and o =6 has a mean of M =48.20.If the sample mean corresponds to a z=-1.50,then how many scores are in the sample?
