An economist thinks that a family's mean monthly cell phone bill is more than $50. To test this claim the null and alternative hypotheses are: Ho: = 50 HA: > 50 Which of the following is a Type I error? The economist concludes the mean monthly cell phone bill is $50, when in fact it is more than $50. O The economist concludes the mean monthly cell phone bill is more than $50, when in fact it is $50. The economist does not conclude the mean monthly cell phone bill is $50, when in fact it is $50. O The economist does not conlcude the mean monthly cell phone bill is more than $50, when in fact it is more than $50. CO