A 90 % confidence interval (a t interval) for the mean lives (in minutes) of Kodak...
A 90 % confidence interval (a t interval) for the mean lives (in minutes) of Kodak AA batteries is ( 470, 530 ). Assume that this result is based on a sample of size 15 . (sample mean=500)
A)What is the value of the sample standard
deviation?
86.6694
86.3843
65.9677
66.2785
B)Construct the 99% confidence interval.
(449.2961,550.7039)
(455.2976,544.7024)
(474.8193,525.1807)
(477.1658,522.8342)
C)If the confidence interval (474.0575 ,525.9425) is obtained
from the same sample data, what is the degree of confidence?
88%
95%
85%
90%
Homework Answers
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A 90 % confidence interval (a t interval) for the mean
lives (in minutes) of Kodak...
A 90 % confidence interval (a t interval) for the mean lives (in minutes) of Kodak...
A 90 % confidence interval (a t interval) for the mean lives (in minutes) of Kodak AA batteries is ( 440, 480 ). Assume that this result is based on a sample of size 15 . 1) What is the value of the sample standard deviation? a) 43.9784 b) 57.7796 c) 57.5895 d) 44.1856 2) Construct the 99% confidence interval. a) (426.1974,493.8026) b) (430.1984,489.8016) c) (443.2129,476.7871) d) (444.7772,475.2228) 3) If the confidence interval (442.7050 ,477.2950) is obtained from the same...
#4. A 95% confidence interval for the lives in minutes) of Kodak AA batteries is 4304...
#4. A 95% confidence interval for the lives in minutes) of Kodak AA batteries is 4304 <470. Assume that the result is based on a sample of size 100. a) What is the value of sample mean? b) What is the population standard deviation o? c) Construct the 99%confidence interval: d) If the confidence interval 432 < u < 468 is obtained from the same sample data, what is the level of confidence? #5. A 95% confidence interval is 48...
1. construct a 95% confidence interval where standard deviation is 15 and mean is 99.133 2....
1. construct a 95% confidence interval where standard deviation is 15 and mean is 99.133 2. construct a 95% confidence interval where standard deviation is 15 and mean is 99 3. construct a 95% confidence interval where standard deviation is 15 and mean is 98.625 i want to add that the population mean is 100 question 1- sample size is 8 question 2- sample size is 20 question 3- sample size is 30
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3 Construct a 90% confidence interval for the following random sample of Lucas Barrett's golf scores for a particular golf course he played so that he can figure out his true (population) aver 95 92 95 99 92 84 95 94 95 86 (hint: Use T-distribution table. Formula Interval estimate of a population mean when stan age score for the dared deviation is unknown) 4 The auto industry relies heavily on 0% financing to entice customers to purchase cars. In...
#6. A 90% confidence interval for the mean height of a population is 65.7<u <67.3. This...
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Use the standard normal distribution or the t-distribution to construct the indicated confidence interval for the...
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Assuming that the population is normally distributed, construct a 90% confidence interval for the population mean, based on the following sample size of n-6. 1, 2, 3, 4, 5, and 19 Change the number 19 to 6 and recalculate the confidence interval. Using these results, describe the effect of an outlier (that is, an extreme value) on the confidence interval. Find a 90% confidence interval for the population mean, using the formula or calculator. [ ] SHS (Round to two...
Refer to the accompanying data set and construct a 90% confidence interval estimate of the mean...
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7. A 99% confidence interval (in inches) for the mean height of a population is 65.89...
7. A 99% confidence interval (in inches) for the mean height of a population is 65.89 <u< 67.51. This result is based on a sample of size 144. If the confidence interval 66.11<u<67.29 is obtained from the same sample data, what is the degree of confidence?
#4. A 95% confidence interval for the lives in minutes) of Kodak AA batteries is 4304 <470. Assume that the result is based on a sample of size 100. a) What is the value of sample mean? b) What is the population standard deviation o? c) Construct the 99%confidence interval: d) If the confidence interval 432 < u < 468 is obtained from the same sample data, what is the level of confidence? #5. A 95% confidence interval is 48...
3 Construct a 90% confidence interval for the following random sample of Lucas Barrett's golf scores for a particular golf course he played so that he can figure out his true (population) aver 95 92 95 99 92 84 95 94 95 86 (hint: Use T-distribution table. Formula Interval estimate of a population mean when stan age score for the dared deviation is unknown) 4 The auto industry relies heavily on 0% financing to entice customers to purchase cars. In...
statistics
itl 5 LTE Confidence Interval for the P... DOCX -16 KB Close Confidence Interval for the Population Mean l. Determine the critical values for 80%, 90%, 95%, and 99%; 2. Construct 80%, 90%, 95%, and 99% confidence interval for the population mean given that the standard deviation of the population is 900 and the sample mean is 425 and the sample consist of 100 points of data 3. Find the T interval for the following: Construct 80% 90%. 95%,...
Assuming that the population is normally distributed, construct a 90% confidence interval for the population mean, based on the following sample size of n-6. 1, 2, 3, 4, 5, and 19 Change the number 19 to 6 and recalculate the confidence interval. Using these results, describe the effect of an outlier (that is, an extreme value) on the confidence interval. Find a 90% confidence interval for the population mean, using the formula or calculator. [ ] SHS (Round to two...
Refer to the accompanying data set and construct a 90% confidence interval estimate of the mean pulse rate of adult females then do the same for adult males Compare the results Click the icon to view the pulse rates for adult females and adult males Construct a 90% confidence interval of the mean pulse rate for adult females Pulse Rates - X bpm bpm (Round to one decimal place as needed) Males 85 69 75 65 51 74 57 73...
7. A 99% confidence interval (in inches) for the mean height of a population is 65.89 <u< 67.51. This result is based on a sample of size 144. If the confidence interval 66.11<u<67.29 is obtained from the same sample data, what is the degree of confidence?
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