Answer:
A. 51.25
Step-by-step explanation:
Given:
Number of samples,
The samples are 49, 52, 48, 52, 54, 51, 53, 53, 53, 51, 52, 52, 52, 50, 51, 53, 53, 46, 48, 52.
The average number of kernels per row is given as the total sum of all the samples divided by the total number of samples.
Therefore, average number of kernels per row is given as:
Divide 8 to five u might get the answer
Answer:
20 is the answer
Step-by-step explanation:
2x0=0+20=20
Answer:
95.86% probability that the sample proportion will differ from the population proportion by less than 3%
Step-by-step explanation:
Problems of normally distributed samples are solved using the z-score formula.
In a set with mean and standard deviation , the zscore of a measure X is given by:
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this problem, we have that:
For a proportion, we have that:
What is the probability that the sample proportion will differ from the population proportion by less than 3%
This is the pvalue of Z when X = 0.07 + 0.03 = 0.1 subtracted by the pvalue of Z when X = 0.07 - 0.03 = 0.04. So
X = 0.1
has a pvalue of 0.9793
X = 0.04
has a pvalue of 0.0207
0.9793 - 0.0207 = 0.9586
95.86% probability that the sample proportion will differ from the population proportion by less than 3%