Please help me this is 7th grade ratios
1 answer:
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Answer:
a
The percentage is
b
The probability is
Step-by-step explanation:
From the question we are told that
The population mean is
The variance is
The range consider is
The value consider in second question is
Generally the standard deviation is mathematically represented as
substituting value
The percentage of a cucumber give the crop amount between 778 and 834 kg is mathematically represented as
Generally
So
From the z-table the value for
and
So
The percentage is
The probability of cucumber give the crop exceed 900 kg is mathematically represented as
substituting values
From the z-table the value for