Mathematics, 10.01.2020 02:31 stodd9503
Astudy was designed to compare the attitudes of two groups of nursing students towards computers. group 1 had previously taken a statistical methods course that involved significant computer interaction. group 2 had taken a statistic methods course that did not use computers. the students' attitudes were measured by administering the computer anxiety rating scale (cars). 1. a random sample of 11 nursing students from group 1 resulted in a mean score of 63.3 with a standard deviation of 3.7. a random sample of 13 nursing students from group 2 resulted in a mean score of 70.2 with a standard deviation of 6.6. can you conclude that the mean score for group 1 is significantly lower than the mean score for group 2? 2. let μ1 represent the mean score for group 1 and μ2 represent the mean score for group 2. use a significance level of α=0.05 for the test. assume that the population variances are equal and that the two populations are normally distributed. a: state the null and alternative hypotheses for the test.
b: compute the value of the t test statistic. round your answer to three decimal places
c: determine the decision rule for rejecting the null hypothesis h0. round your answer to three decimal places. reject or fail to reject your hypothesis?
Answers: 1
Mathematics, 21.06.2019 19:30, raytaygirl
Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?
Answers: 2
Astudy was designed to compare the attitudes of two groups of nursing students towards computers. gr...
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