The alternative and null hypotheses is given below,
Null Hypothesis, H0: μ1 - μ2 = 0
Alternative Hypothesis, Ha: μ1 - μ2 < 0
Compound Variance is given as,
sp = sqrt( s12n1+s22n2)
sp = sqrt(16973 + 112.3673)
sp = 1.9632
Test statistic of z is,
z = (x1bar - x2bar)/sp
z = (69 - 71)/1.9632
z = -1.02
P-value Approach, P=0.1539 as long as P>= 0.
As P-value >= 0.01, failing to rule out the null hypothesis.
<h3>
What is known as a decimal mark?</h3>
To differentiate between a whole number and its fractional component, a decimal point is used either as a point or a dot. It is also referred to as a decimal mark. The symbol for the decimal point is (.). In daily life, decimals are also frequently used. That whenever a shirt costs $10.50, for instance, the price can be written as 10.50.
To learn more about decimal point, Visit brainly.com/question/14938802
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Answer:
Common denominator of 2 and 5 if you want to add or subtract two fractions with 2 and 5 as denominators.
Step-by-step explanation:
Step 1) Take the LCD and divide each denominator by it as follows:
10/2 = 5
10/5 = 2
Step 2) Multiply each nominator with the respective answers from Step 1:
3 x 5 = 15
2 x 2 = 4
Step 3) Put it all together to solve the problem:
15/10 + 4/10 = 19/10
= 3/2 + 2/5 = 19/10
=10
Answer:
9 bike racks
Step-by-step explanation:
25 girls. 20 Boys
20+25=45
Each bike rack hold 5 bikes
45÷5= 9
Area of the border = 2(82 x 3) + 2(94 x 3) - 4( 3 x 3)
Area of the border = 492 + 564 - 36
Area of the border = 1020 m²
Answer: 1020 m²
Answer:
Not sure sorry
Step-by-step explanation:
