Geno's Steaks is trying to figure out if they are producing more sandwiches they than the...
Geno's Steaks is trying to figure out if they are producing more sandwiches they than the previous year. The mean number of sandwiches sold last year was 1000 a day with a standard deviation of 25. They have been selling sandwiches for 3 weeks now and have found the mean number of sandwiches sold being 1100. Using a .01 level of confidence, can you conclude that the new machine produces more ball?
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Geno's Steaks is trying to figure out if they are producing more
sandwiches they than the...
A manager is trying to figure out which of her top 2 salespeople is the best,...
A manager is trying to figure out which of her top 2 salespeople is the best, as measured by average number of sales made per week. Thus, she’s set up the following hypothesis test that they are equally as good, & if she can reject that hypothesis, she will conclude that the salesperson with the highest average weekly sales (Salesperson #2) is the best. She’s looked back at all the weeks worked for both employees to calculate the statistics below....
Suppose that we are interested in determining whether cats tend to sleep more than 12 hours...
Suppose that we are interested in determining whether cats tend to sleep more than 12 hours a day on average let denote the true number of hours that cats sleep each night. You observe 32 cats for a day and record the number of hours that each of the cats slept. The average of your samples 13.1 hours and the sample standard deviation of your sample is 2.8 hours. Your confidence intervalis (a) Construct a 99% confidence interval for hours...
in a clinical trial 27 out of 854 patients in a condrug dalycomed of the symptoms,...
in a clinical trial 27 out of 854 patients in a condrug dalycomed of the symptoms, pois now on coming company is there will conclude more than 25 of this drugs users cance fuke symptoms as a side effect at the 01 of 2 of the poor and the same the requests for testing the hypothes wasted Decause (-) Desme Round to one capace as needed What are the null and alterative hypotheses? Ho VESH (Typenlegers or dem Do not...
please solve #6,7, & 8 please solve step by step and by hand and show all...
please solve #6,7, & 8
please solve step by step and by hand and show all the details
please, thanks in advance
BILL UNU I JUMU U The American Medical Association 301:165-1/4 6. Watching television: The General Social Survey reported that in a sample of 68 men and hours of television watched per day was 2.76 with a standard deviation of 2.21. In a sample ported that in a sample of 68 men aged 18-25, the mean number of mean...
need answer immediately of last g h and i part D f. What is the probability...
need answer immediately of last g h and i part
D f. What is the probability of no more than 1600 fatal crashes a year due to drowsy drivers? 8. Given that the probability of there being more than 1700 crashes per year is 0.31, use this information (not an Excel function) to find the probability of there being less than 1400 crashes per year due to drowsy drivers. h. For a year to be in the upper 5% with...
It costs more to produce defective items - since they must be scrapped or reworked -...
It costs more to produce defective items - since they must be scrapped or reworked - than it does to produce non-defective items. This simple fact suggests that manufacturers should ensure the quality of their products by perfecting their production processes instead of depending on inspection of finished products. In order to better understand a particular metal stamping process, a manufacturer wishes to estimate the mean length of items produced by the process during the past 24 hours. a) How...
st is 300 and mean is 0.8998 24 d. What is the probability the number of...
st
is 300 and mean is
0.8998 24 d. What is the probability the number of fatal crashes will be between 1000 and 25 year? 26 27 28 e. What is the probability of more than 1750 fatal crashes a year due to drowsy drivers? 0.2525 31 f. What is the probability of no more than 1600 fatal crashes a year due to drowsy drivers? 32 0.5662 34 s. Given that the probability of there being more than 1700 crashes...
Question 1 A study was conducted to estimate μ, the mean number of weekly hours that...
Question 1 A study was conducted to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard deviation is assumed to be σ = 3.6 hours. A similar study conducted a year earlier estimated that μ, the mean number of weekly hours that U.S. adults use computers at home,...
Answer ALL questions please! 1. Records of 40 used passenger cars and 40 used pickup trucks...
Answer ALL questions please!
1. Records of 40 used passenger cars and 40 used pickup trucks (none used commercially) were randomly selected to investigate whether there was any difference in the mean time in years that they were kept by the original owner before being sold. For cars the mean was 5.3 years with standard deviation 2.2 years. For pickup trucks the mean was 7.1 years with standard deviation 3.0 years. a. Construct the 95% confidence interval for the difference...
Question 2 A tire manufacturer claims that their tires have an average life of more than...
Question 2 A tire manufacturer claims that their tires have an average life of more than 12000 km. A random sample of 20 tires has an average life of 12110 km with a standard deviation of 185 hours. Assume that the life of tires is normally distributed. What is/are the critical value(s)? Use 0.05 Answer: 1.7291 Question 3 We estimate population parameters by using a) only point estimates deviation d) point and interval estimates Answer: d b) only interval estimates...
Suppose that we are interested in determining whether cats tend to sleep more than 12 hours a day on average let denote the true number of hours that cats sleep each night. You observe 32 cats for a day and record the number of hours that each of the cats slept. The average of your samples 13.1 hours and the sample standard deviation of your sample is 2.8 hours. Your confidence intervalis (a) Construct a 99% confidence interval for hours...
in a clinical trial 27 out of 854 patients in a condrug dalycomed of the symptoms, pois now on coming company is there will conclude more than 25 of this drugs users cance fuke symptoms as a side effect at the 01 of 2 of the poor and the same the requests for testing the hypothes wasted Decause (-) Desme Round to one capace as needed What are the null and alterative hypotheses? Ho VESH (Typenlegers or dem Do not...
please solve #6,7, & 8
please solve step by step and by hand and show all the details
please, thanks in advance
BILL UNU I JUMU U The American Medical Association 301:165-1/4 6. Watching television: The General Social Survey reported that in a sample of 68 men and hours of television watched per day was 2.76 with a standard deviation of 2.21. In a sample ported that in a sample of 68 men aged 18-25, the mean number of mean...
need answer immediately of last g h and i part
D f. What is the probability of no more than 1600 fatal crashes a year due to drowsy drivers? 8. Given that the probability of there being more than 1700 crashes per year is 0.31, use this information (not an Excel function) to find the probability of there being less than 1400 crashes per year due to drowsy drivers. h. For a year to be in the upper 5% with...
It costs more to produce defective items - since they must be scrapped or reworked - than it does to produce non-defective items. This simple fact suggests that manufacturers should ensure the quality of their products by perfecting their production processes instead of depending on inspection of finished products. In order to better understand a particular metal stamping process, a manufacturer wishes to estimate the mean length of items produced by the process during the past 24 hours. a) How...
st
is 300 and mean is
0.8998 24 d. What is the probability the number of fatal crashes will be between 1000 and 25 year? 26 27 28 e. What is the probability of more than 1750 fatal crashes a year due to drowsy drivers? 0.2525 31 f. What is the probability of no more than 1600 fatal crashes a year due to drowsy drivers? 32 0.5662 34 s. Given that the probability of there being more than 1700 crashes...
Answer ALL questions please!
1. Records of 40 used passenger cars and 40 used pickup trucks (none used commercially) were randomly selected to investigate whether there was any difference in the mean time in years that they were kept by the original owner before being sold. For cars the mean was 5.3 years with standard deviation 2.2 years. For pickup trucks the mean was 7.1 years with standard deviation 3.0 years. a. Construct the 95% confidence interval for the difference...
Question 2 A tire manufacturer claims that their tires have an average life of more than 12000 km. A random sample of 20 tires has an average life of 12110 km with a standard deviation of 185 hours. Assume that the life of tires is normally distributed. What is/are the critical value(s)? Use 0.05 Answer: 1.7291 Question 3 We estimate population parameters by using a) only point estimates deviation d) point and interval estimates Answer: d b) only interval estimates...
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