A computer company stated that children uses their products 6.77 hours per week. You gathered 30 independent samples from a group of children using their products and obtained an average 7.8 hours per...

A computer company stated that children uses their products 6.77 hours per week. You gathered 30 independent samples from a group of children using their products and obtained an average 7.8 hours per week, with a sample standard deviation of 2.9 hours and at alpha = 0.10, compute the critical value