Explain each question

10. A prediction interval for a lture or single value of Y will have a smaller margin of error than the condence interval for the average response y. 0 True 0 False 19. A 95% confidence interval for the difference in mean bacterial concentration in the air of carpeted rooms versus uncarpeted rooms is (use 1 1 degrees of freedom). O -7.47 to 31.47. O -18.89 to 42.89. O -16.66 to 34.66. O -14.02 to 32.01.21}. The researcher wants to investigate whether carpet makes a difference (either increases or decreases) in the mean bacterial concentration in air. The numerical value of the two-sample {statistic for this test is O 0.414 O 3.813 O 1.312 O 0.358. 21. The P-value for the test described above is approximately 0.42, what can be conchlded from the hypothllis test. 0 There is no evidence of a difference between the average amount of bacteria in the carpeted and uncarpeted rooms. 0 Reject the null hypothesis at a signicance level of 0.05. O The null hypothesis is true. 0 The alternative hypothesis is true