Find 'per hour' here based on the above information.
10 1/2 divided by 3/4
10.5 ÷ 0.75 = 14
14 windows can be washed in one hour is the answer.
Answer:
The answer is step 1.
Step-by-step explanation:
Because 1/4 times 1/3k would be 1/12k.
Z = 1.555 should be used
If we seek an 88% confidence interval, that means we only want a 12% chance that our interval does not contain the true value.
Assuming a two-sided test, that means we want a 6% chance attributed to each tail of the Z-distribution.
the zα/2 value of z0.06.
This z value at α/2=0.06 is the coordinate of the Z-curve that has 6% of the distribution's area to its right, and thus 94% of the area to its left. We find this z-value by reverse-lookup in a z-table.
<h3>What is Z-distribution?</h3>
The standard normal distribution, also called the z-distribution, is a special normal distribution where the mean is 0 and the standard deviation is 1.
Any normal distribution can be standardized by converting its values into z-scores. Z-scores tell you how many standard deviations from the mean each value lies.
<h3>Why is z-score used?</h3>
The standard score (more commonly referred to as a z-score) is a very useful statistic because it
(a) allows us to calculate the probability of a score occurring within our normal distribution and
(b) enables us to compare two scores that are from different normal distributions.
To learn more about Z-distribution from the given link
brainly.com/question/17039068
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Since <span><span>−64</span><span>-64</span></span> does not contain the variable to solve for, move it to the right side of the equation by adding <span>6464</span> to both sides.<span><span><span>x2</span>=64</span><span><span>x2</span>=64</span></span>Take the square root of both sides of the equation to eliminate the exponent on the left side.<span><span>x=<span>±<span>√64</span></span></span><span>x=<span>±64</span></span></span>The complete solution is the result of both the positive and negative portions of the solution.
<span>x=8,<span>−<span>8</span></span></span>