Question

In: Statistics and Probability

perform the appropraite test of hypothesis with minitab. Null hypothesis: mean of the post scores is...

perform the appropraite test of hypothesis with minitab.

Null hypothesis: mean of the post scores is equal or lower than the mean of the pre score.

Alternative hypothesis: mean of the post scores is higher the mean of the pre score.

POSTSCORE PRESCORE

129 148

147 154

147 135

140 164

157 132

144 150

147 154

156 143

151 139

144 132

144 136

149 122

128 151

154 134

145 134

131 135

158 135

153 150

140 147

146 135

133 125

169 131

152 115

131 172

144 149

Solutions

Expert Solution

Using Minitab software, (Stat -> Basic Statistics -> Paired t ), we get the following output -

Here,

The value of test statistic t = 1.22

and P-value = 0.118

Since P-value > 0.05, so we fail to reject H0 at 5% level of significance and we can conclude that mean of the post scores is not significantly higher the mean of the pre score

orchestra answered 1 year ago

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