question archive A factory is doing some statistical analysis on the mean weight of a product, but these analysis are only valid if the weights are normally distributed
A factory is doing some statistical analysis on the mean weight of a product, but these analysis are only valid if the weights are normally distributed
Subject:MathPrice: Bought3
A factory is doing some statistical analysis on the mean weight of a product, but these analysis are only valid if the weights are normally distributed. The product has a mean weight of 45g and standard deviation of 15g. A sample of 500 units was taken, with weight distribution given in Table 4. Does this suggest that the weights are normally distributed? Explain your answer
Weight (gram) Number of observations
Less than10 9
10 - 19.99 31
20 - 29.99 65
30 - 39.99 97
40 - 49.99 115
50 - 59.99 94
60 - 69.99 49
70 - 79.99 24
80 - 89.99 16
