We can calculate (62 + 90) / 2 = 76. it's <span>known that 95% lies between the mean and twice the standard deviation. </span><span>if the mean is "μ" and the standard deviation is "σ": </span><span>μ-2σ and μ+2σ. i</span><span>f μ=76, then </span><span>76+2σ = 90, so 2σ = 14, so σ = 7.
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<span>the mean is 76 and the standard deviation 7. </span>
Answer:
B
Step-by-step explanation:
16 - 7 = 9
The pie chart below depicts a housewife's expenditures for a certain day.
<h3>What is a pie chart?</h3>
A map wherein the round is split into segments, each one representing a percentage of the total.
The data below show the expenditure of a housewife for a particular day
Item amount
Rice - 120
Yam - 100
Beans - 140
Vegetable - 140
Meat - 180
Sugar - 40
Palm oil - 60
The pie chart is given below.
More about the pie chart link is given below.
brainly.com/question/9979761
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D, 7-7 = 0
1-1 = 0
0 x 0 = 0
Answer:
s cm+s cm+s cm+s cm
Step-by-step explanation: