The weights (lb) of discarded plastic from a sample of households are 62 with a mean of 1,911 lb and the standard deviation is 1,065 lb. Use a 0,05 significance level to test the claim that the mean weight of discarded plastic from the population is greater than 1,800 lb.
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Expert's answer
2020-05-13T19:03:10-0400
Null hypothesis H0:μ=1800.
Alternative hypothesis Ha:μ>1800.
Test statistic: z=nσxˉ−μ=6210651911−1800=0.82.
P-value: p=P(Z>0.82)=0.206.
Since the P-value is greater than 0.05, fail to reject the null hypothesis.
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