Determining the hypothesis State the Null and Alternative hy

Determining the hypothesis: State the Null and Alternative hypothesis for each of the following study. (If symbols are used, please indicate what the symbol means). (1) (3pts)The examinations in a large freshman chemistry class are scaled after grading so that the mean 75. The professor think that female students will have a higher mean score than the overall class as a whole. (2) (3pts)The average ACT score for first year students in NMSU is 20.5. The admission office stated that the average ACT score for Business College is lower than overall average. A professor is questioning that statement, and collected a SRS of 25 students from Business College. (3) (3pts)Experiments on learning in animals sometimes measure how long it takes a mouse to find its way through a maze. The mean time is 20 minutes for a particular maze. A researcher thinks that plying rap music will cause a mice to go through the maze slower. He measured the time of going through the maze of 12 mice as a sample. (4) (3pts)The average footage of a one-bedroom apartment in a new student-housing development is advertised to be 880 square feet. A student group think that the apartments are smaller than advertised. They hire an engineer to measure a sample of apartments to prove their belief.

Solution

The examinations in a large freshman chemistry class are scaled after grading so that the mean 75. The professor think that female students will have a higher mean score than the overall class as a whole

Ho miu > 75

H1 miu <= 75

The average ACT score for first year students in NMSU is 20.5. The admission office stated that the average ACT score for Business College is lower than overall average. A professor is questioning that statement, and collected a SRS of 25 students from Business College

Ho : miu < 20.5

H1 ; miu >= 20.5

xperiments on learning in animals sometimes measure how long it takes a mouse to find its way through a maze. The mean time is 20 minutes for a particular maze. A researcher thinks that plying rap music will cause a mice to go through the maze slower. He measured the time of going through the maze of 12 mice as a sample

Ho: miu < 20

H1 : miu >= 20

The average footage of a one-bedroom apartment in a new student-housing development is advertised to be 880 square feet. A student group think that the apartments are smaller than advertised. They hire an engineer to measure a sample of apartments to prove their belief.

Ho: miu < 880

H1 : miu >= 880