6) A random sample of 10 parking meters in a resort community showed the following incomes...
6) A random sample of 10 parking meters in a resort community showed the following incomes for a day. Assume the incomes are normally distributed. Find the 95% confidence interval for the true mean. Show set up. Answer is all decimal places displayed on calculator. $3.60 $4.50 $2.80 $6.30 $2.60 $5.20 $6.75 $4.25 $8.00 $3.00 7) A doctor at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she...
6) A random sample of 10 parking meters in a resort community showed the following incomes for a day. Assume the incomes are normally distributed. Find the 95% confidence interval for the true mean. Show set up. Answer is all decimal places displayed on calculator. $3.60 $4.50 $2.80 $6.30 $2.60 $5.20 $6.75 $4.25 $8.00 $3.00 7) A doctor at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she...
second bullet point of 11 and 12 mead 13. The number of wins in a season for 16 randomly selected professional football teams are listed below. (Section 6.2) Note: Use the SPSS below. Number of Wins in a Season for Professional Football Teams 9 9 9 10 9 7 12 9 9 7 10 7 7 stes 1.153.1.100 -0.731 Wins One-Sample Statistics N Mean Std Deviation Std. Error Mean 16 8.38 1.668 Jice 417 8.38 + 0.73= One-Sample Test Test...
Beview 1JA survey of 700 non-fatal accidents showed that 183 involved faulty equipment. Find a point estimate for p, the population proportion of accidents that involved faulty equipment. 2) An article a Florida newspaper reported on the topics that teenagers most want to discuss with their pare nts. The findings, the results of a poll, showed that 46% would like more discussion about the family's financial situation, 37% would like to talk about school, and 30% would like to talk...
In a certain town, a random sample of executives have the following personal incomes (in thousands); 35 43 29 55 63 72 28 33 36 41 42 57 38 30 Assume the population of incomes is normally distributed. Find the 95% confidence interval for the mean income.
A random sample of 31 students at a community college showed an average age of 25 years. Assume the ages of all students at the college are normally distributed with a standard deviation of 1.8 years The 98% confidence interval for the average age of all students at this college is (Round your answers to 3 decimal places.) 1 Point Answer From 24.248 To 25.752
3. (7pt) Money taken in from parking meters is an important revenue source for most cities. A random sample of the daily intake from 8 parking meters in one particular city was collected, and the results are reported below. The following data come from a population that is normally distributed. 128 132 121 141 119 149 99 106 Parking Fees Collected ($) a. Based on these data, construct a 98% confidence interval for the average amount of money collected by...
The monthly incomes from a random sample of workers in a factory are shown below. Monthly Income, in $1,000 4.0 5.0 7.0 5.0 6.0 6.0 10.0 8.0 9.0 (Please, avoid rounding intermediate steps and round your final solutions to at least 2 decimal places) Compute the 95% confidence interval for the mean monthly incomes of the workers. Provide the lower and upper bound of the interval below and give your answer in dollars. Are there any additional assumptions needed in...
A study of generationrelated carbon monoxide deaths showed that a random sample of 6 recent years had a standard deviation of 4.1 deaths per year. Find the 99% confidence interval of the variance and standard deviation. Assume the variable is normally distributed.
In a current study, a random sample of 10 teachers from Utah and an independent random sample of 10 teachers from Oregon have been asked to report their annual income. The data obtained are as follows: Annual income in dollars Utah 27546, 44083, 28883, 51011,47816, 37664, 29782, 38427, 34392, 46246 Oregon 43533, 23624, 40005, 53129, 29843, 26674, 40323, 33644, 39229, 39894 The population standard deviations for the annual incomes of teachers in Utah and in Oregon are estimated as $6400...