Mathematics, 20.09.2020 08:01 person4936
Problem 2. Twenty students from a class of 150 were randomly selected to take a
survey. Compute the standard deviation for the data.
2, 2.5, 3, 3, 3.1, 3.4, 3.5, 3.6, 3.8, 4, 4.2, 4.2, 4.3, 4.5, 4.9, 5, 5.4, 6, 6.5, 6.7
Answers: 3
Mathematics, 22.06.2019 02:30
According to a research study, parents with young children slept 6.4 hours each night last year, on average. a random sample of 18 parents with young children was surveyed and the mean amount of time per night each parent slept was 6.8. this data has a sample standard deviation of 0.9. (assume that the scores are normally distributed.) researchers conduct a one-mean hypothesis at the 5% significance level, to test if the mean amount of time parents with young children sleep per night is greater than the mean amount of time last year. the null and alternative hypotheses are h0: μ=6.4 and ha: μ> 6.4, which is a right-tailed test. the test statistic is determined to be t0=1.89 using the partial t-table below, determine the critical value(s). if there is only one critical value, leave the second answer box blank.
Answers: 3
Mathematics, 22.06.2019 02:30
In 1995 america online had about 3000000 users over the next decade users are expected to increase from a few million to the tens of millions suppose the number of users increased by 150% by the year 2000 how many users will there be in the year 2000
Answers: 3
Mathematics, 22.06.2019 02:40
21 type the correct answer in each box. if necessary, round your answers to the nearest hundredth the vertices of abc are a(2,8), b(16, 2), and c(6,2). the perimeter of abc is units, and its area is square units
Answers: 2
Mathematics, 22.06.2019 05:00
Abuilder divides a rectangular plot in half along the diagonal.if the plot is 1\2-mile wde and the diagonal measures 1 3\10-miles long,what is the length of the plot?
Answers: 1
Problem 2. Twenty students from a class of 150 were randomly selected to take a
survey. Compute the...
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