Question

IJUI TU Comp Nutrition: animals. The mouse weights (in grams) of a random sample of 100 mice involved in a nutrition experimentare: Interval 41.5-43.5 43.5-45.5 45.5-47.5 47.5 - 49.5 19.5-51.5 Frequency 3 11 27 16 Interval 51.5-53.5 53.5 - 55.5 55.5 - 57.5 57.5 - 59.5 Frequency 15 13 6 a. Find the mean of the weight of the mice.gms (Type an integer or a decimal. Round to two decimal places.) b. Find the standard deviation of the weight of the mice gms (Type an integer or a decimal. Round to two decimal places.) Enter your answer in each of the answer boxes.

Answer 1

To find mean weight of formula is mice, mean, M= {weight a number of mice total no. no. of mice. given are interval, we find mean of the interval Hence, we get weight frequency 415+43.5 2 42.5 9 44.5 46.5 11 27 48.5 soos 16 52-5 15 13 Su.5 6 56.5 38.5 2 - Mean= (42.5) 3 + (44.5) 7 + (46.57211 + (48.5) 27 +(50-5) 16 +($2.5) 15 +(54.5213 +(56-5) 6 +88.5)2) 100 127-57 3115 + 511.5+ 1309.5+ 808 + 787.5+ 408.5+ 339 + 117 100

5020 loo Mean, M= 50-2 grams. Mean weight of the mice=150.20 standard deviation, o = variance Variance 2C- iel n M=50-2 9 C42.5-50-2) + (44.5-50-2) +- + (48-5-20-2)2 + (50.5 50.2 en-t585-50.2)) - 40 51 23 + 32 41 + 3 6 + 2 S7 + -o9 + 5-29 +18.49 + 39.69 +68-89) 240.81 9 = 26.75 Variance, o2 = 26.75 i standard deviation, 5=526.75 [o= 5.17 gens,

Kindly leave a comment for any queries.

Thank you.