Weight (gm) |
8.499993 |
8.499998 |
8.499996 |
8.499996 |
8.499987 |
8.499987 |
8.499996 |
8.500008 |
8.499997 |
8.499996 |
From the data values,
Weight (gm) | ||
8.499993 | ||
8.499998 | ||
8.499996 | ||
8.499996 | ||
8.499987 | ||
8.499987 | ||
8.499996 | ||
8.500008 | ||
8.499997 | ||
8.499996 | ||
Excel function | ||
Mean | 8.4999954 | =AVERAGE() |
Std Dev | 0.0000059292 | =STDEV() |
N | 10 | =COUNT() |
The test statistic is,
The P-value is obtained using the standard normal distribution table for z = - 2.4536 and two-tailed hypothesis.
The null hypothesis is rejected. Hence there is a statistically significant difference between sample mean and population mean.
Since the null hypothesis is rejected, the confidence interval is required to determine true mean range,
Weight (gm) 8.499993 8.499998 8.499996 8.499996 8.499987 8.499987 8.499996 8.500008 8.499...
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