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A survey was taken bu 30 girls and 30 boys of how many hours they spend...

A survey was taken bu 30 girls and 30 boys of how many hours they spend playing video games. Girls spent 308 hours a week and the boys spent 462 hours a week. Do the data provide sufficient evidence to conclude that the mean lenght in time sxhool age girls play video games less than school age boys?Assume the standard diviation is 9.5 hours for girls and 27.9 hours for boys
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Answer #1

Girls spent () 308 hours a week and the boys spent () 462 hours a week.Assume the standard diviation is (S1) 9.5 hours for girls and (S2) 27.9 hours for boys.

n1 = 30 and n2 = 30

The null and alternative hypothesis,

The test statistics is given by,

degrees of freedom = 35

P-value = 0.000

The data provide sufficient evidence to conclude that the mean lenght in time school age girls play video games less than school age boys.

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