Question

please please PLEASE. i know its asking a lot from someone online but hear me out. i lost my pet two dayz ago and now i have to do this assingment lile wHaT?

A hypothesis regarding the weight of newborn infants at a community hospital is that the mean weight is 6.6 pounds. The weights of newborn infants is assumed to be normally distributed. A sample of seven infants is randomly selected and their weights at birth are recorded as 9.0, 7.3, 6.0, 8.8, 6.8, 8.4, and 6.6 pounds. If a = 0.05, what is the critical t-value?

Answer 1

hypothesis:-

HO :μ = 6.6

997 11:1H

where $\mu$ is the mean weight of newborn infants.

this is a two tailed test.

sample size (n) = 7

degrees of freedom = (n-1) = (7-1) = 6

t critical value for alpha= 0.05 be:-

t* = +2.447

[ from t distribution table, for df = 6, both tailed test.

more elaboration just for your ease to find out t critical value by yourself:-

you need to find,

t* = ta/2 = t.05/2 = to.025

in t distribution table , in the alpha= 0.025 column..see the value corresponding to the row which is containing df =6.

you will get, ]

t* = 2.447

the diagram showing the critical value and critical region be:-

critical region remitica -2,447 ó 21447.

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