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Mathematics, 13.07.2020 20:01 zakariahassan3482
Javier read a report that said the probability that a randomly selected American is left-handed is 14 % 14%14, percent. He was curious how many left-handed students to expect in a class of 30 3030 students. He simulated 100 100100 classes of 30 3030 students where each student selected had a 0.14 0.140, point, 14 probability of being left-handed. Javier counted how many left-handed students were in each simulated class. Here are his results: 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9# of left-handed students Use his results to estimate the probability that there are 7 77 or more left-handed students in a class of 30 3030 students. Give your answer as either a fraction or a decimal. P ( 7 or more left-handed ) ≈ P(7 or more left-handed)≈P, left parenthesis, 7, start text, space, o, r, space, m, o, r, e, space, l, e, f, t, negative, h, a, n, d, e, d, end text, right parenthesis, approximately equals
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Mathematics, 22.06.2019 03:40
Anull hypothesis states that the difference between 8 hours of sleep and 3 hours of sleep has no effect on the number of pictures a student will remember during a picture memory interface test (pmit). examining the mit database, an extremely small t-value of 0.1611 is found. this t-value is much smaller than the smallest t-value on the chart for p-value reference. from this information we can: select one: a. accept the null hypothesis because the p-value obtained shows that the difference between the two groups being tested is not statistically significant b. accept the null hypothesis because the p-value obtained was statistically significant c. reject the null hypothesis because of the p-value obtained d. reject the null hypothesis because the data obtained is statistically significant
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Javier read a report that said the probability that a randomly selected American is left-handed is 1...
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