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Jessica and Heather want to find the mean amount of time it takes students in their class to travel to school. So they each randomly select students in their class and ask for the times. its due really soon please help

Jessica and Heather want to find the mean amount of time it takes students in their class to travel to school So they each randomly select students in their cla class=

Respuesta :

Answer:

Jessica's sample mean = 7.25

Heather's sample mean = 12.25

Step-by-step explanation:

Jessica's sample mean = [5+7+8+9] / 4

Jessica's sample mean = [29] / 4

Jessica's sample mean = 7.25

Jessica's sample size = 4

Heather's sample mean = [12+14+6+13+9+17+7+20] / 8

Heather's sample mean = [98] / 8

Heather's sample mean = 12.25

Heather's sample size = 8

Jessica's sample size will be choose it has large sample size

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