Question 13 Tries remaining: Marked out of 2.00 A psychologist claims that the mean number of items teenagers can retain

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Question 13 Tries remaining: Marked out of 2.00 A psychologist claims that the mean number of items teenagers can retain in short term memory is 6.8. You randomly select 19 students and measure their short-term memory capacity. The sample mean and sample standard deviation are 6.7 and 0.24 respectively. The test statistic is -1.816. Is there enough evidence to reject the psychologist's claim if alpha0.05? Hat question Select one No, you should retain the null hypothesis (Ho). There is not enough evidence to refute the psychologist's claim Yes, you should reject the null hypothesis, and accept the alternate hypothesis (Ha). There is enough evidence to refute the psychologist's claim Check

Ha researcher fails to find a significant difference when in fact one exists in the population: Question 14 Tries remaining Marked out of 2000 Pron question Select one the alternate hypothesis was correctly accepted Type 1 error has been made. a Type Il error has been made the rol hypothesis was correctly rejected Check

Question 15 In a hypothesis test the larger the p-value from 01 to 07, the more likely we are to: Te Pent Marted out of 2.00 Select one Reject the null hypothesis Fail to reject the rul hypothes Conclude that our result is stilyant None of the above

Question 16 Tres remaining and out of 100 A random sample of 500 registered voters in a cty show that 53% of the voters support higher taxes to help fund public schools. The standard error of the proportion is (round to 2 decimats) Check