The average amount of time boys and girls ages 7 through 11 spend playing sports each day is believed to be the same. Is there a difference in the mean amount of time boys and girls ages 7 through 11 play sports each day? Determine the null and alternative hypotheses. Ho : P1 = P2 O Ha : M1 7 /2 O Ho : M1 = M2 O Ha : P1 / P2 O Ha : p1 192 Hazl >112 Consider the following example: A recent drug survey showed an increase in the use of drugs and alcohol among local high school seniors as compared to the national percent. Suppose that a survey of 100 local seniors and 100 national seniors is conducted to see if the proportion of drug and alcohol use is higher locally than nationally. Locally, 65 seniors reported using drugs or alcohol within the past month, while 60 national seniors reported using them. Compute the pooled proportion 13 for this example. Consider the following example: A recent drug survey showed an increase in the use of drugs and alcohol among local high school seniors as compared to the national percent. Suppose that a survey of 100 local seniors and 100 national seniors is conducted to see if the proportion of drug and alcohol use is higher locally than nationally. Locally, 65 seniors reported using drugs or alcohol within the past month, while 60 national seniors reported using them. Compute the estimated standard error using the pooled proportion. Round your answer to three decimal places