It is recommended that adults get 8 hours of sleep each night. a researcher hypothesized college students got less than the recommended number of hours of sleep each night, on average. the researcher randomly sampled 20 college students and obtained a p-value of 0.10. suppose the researcher sampled more college students and that the sample mean and sample standard deviation stayed the same. would the p-value be lower, be higher, or stay the same?

The p-value becomes lower.

Step-by-step explanation:

Let (unknown) be the true mean of number of hours of sleep each night. If we have the hypothesis vs , the test statistic for a small sample size n = 20 is , where   and S are the sample mean and standard deviation respectively. If is true, we know that T has a t distribution with n-1 degrees of freedom. The p-value for the lower-tail alternative is computed as , where is the observed value for the given sample. If we increase the size of the sample and the sample mean and sample standard deviation stayed the same, then, the value becomes smaller, besides, this quantity is always positive. The absolute value of stays the same, and the absolute value of the observed value becomes bigger.  

If is negative, then, is also negative and smaller than , therefore, becomes lower.

answer: given that the roller coaster can accommodate 1600 riders per hour, thus the roller coaster can accomodate 1600 / 60 = 26.67 riders per minute.

given that there are 345 people in the line, the number of minutes it will take for the 345 persons to get into the roller coaster is given by 345 / 26.67 = 12.94 minutes.

therefore, it will take you 12.94 minutes to get to the front of the line.

step-by-step explanation:

answer: the 4 kilogram bag

step-by-step explanation: this is because if you divide the number of kilograms into the total it will tell you how much each individual kilogram would be worth. 2 kilos is 7 and change 3 would be around 6 ish and the 4 kilo would be 4.6 and change and the 5 kilos would be like 4.88