Will give brainliest and points
a sample contains 61 pairs of values. find the critical value for the linear correlation coefficient from table a-6 corresponding to a 0.05 significance level.

a. 0.330
b. 0.236
c. 0.279
d. 0.254

im confused on how to use the chart for this one? !

a

step-by-step explanation:

i think it might be a but you might want a second opinion

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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