Mathematics, 14.10.2020 15:01 Jadamachado45
By switching service providers , a family's telephone bill decreased from about $ 50 a month to about 44 . What was the percent decrease ?
Answers: 2
Mathematics, 21.06.2019 21:00
When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years
Answers: 1
Mathematics, 22.06.2019 03:00
Gabrielle's age is three times mikhail's age. the sum of their ages is 40 . what is mikhail's age? __ years old
Answers: 2
Mathematics, 22.06.2019 03:30
Find the solution set for this equation: t^2+7t=0 separate the two values with a comma.
Answers: 2
Mathematics, 22.06.2019 04:30
The survey of study habits and attitudes (ssha) is a psychological test that measures the motivation, attitude toward school, and study habits of students, scores range from 0 to 200. the mean score for u.s. college students is about 115, and the standard deviation is about 30. a teacher who suspects that older students have better attitudes toward school gives the ssha to 55 students who are at least 30 years of age. the mean score is 113.2. assume the population standard deviation is 30 for older students what is the margin of error for a 95% confidence interval for the population mean score for a. older students? b. compute the 95% confidence interval for the population mean score for older students. c. compute the 99% confidence interval for the population mean score for older students. d. compute the 88% confidence interval for the population mean score for older students.
Answers: 3
By switching service providers , a family's telephone bill decreased from about $ 50 a month to abou...
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