Mathematics, 22.04.2020 02:51 drey10
A college admissions director wishes to estimate the mean age of all students currently enrolled. In a random sample of 20 students, the mean age is found to be 22.9 years. From past studies, the standard deviation is known to be 1.5 years, and the population is normally distributed. Construct a 90% confidence interval of the population mean age.
Answers: 2
Mathematics, 21.06.2019 19:30, valerieaj113
Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500
Answers: 2
Mathematics, 22.06.2019 00:30, puppylover72
Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?
Answers: 2
Mathematics, 22.06.2019 00:30, dragpack70
Will mark ! (10 points also! ) if x varies inversely with y and x =6 when y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15
Answers: 1
A college admissions director wishes to estimate the mean age of all students currently enrolled. In...
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