weberalycia
weberalycia
25.10.2020 • 
Mathematics

A consulting firm believes that the mean number televisions in a household in the US is 2.4 with a standard deviation of 1.3 random sample of 40 households was obtained in the mean number of televisions per household in the sample was 2.78 what is the probability of getting a sample mean of 2.78 or greater when surveying 40 households

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