GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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There is a 99% chance that that the population mean of the systolic blood pressure for patients is between 131.2 mmHG and 145.72 mmHg.
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The method used to construct the interval will produce an interval that includes the value of the population mean about 99% of the time is repeated sampling.
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I am 99% confident that that the population mean of the systolic blood pressure for patients is between 131.2 mmHG and 145.72 mmHg.
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I am 99% confident that that the sample mean is between 131.2 mmHG and 145.72 mmHg.
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Detailed explanation-1: -If the 95% confidence intervals are known for two sample means, there is a simple test to determine whether those sample means are significantly different. If the 95% CIs for the two sample means do not overlap, the means are significantly different at the P < 0.05 level.
Detailed explanation-2: -Since 95% of values fall within two standard deviations of the mean according to the 68-95-99.7 Rule, simply add and subtract two standard deviations from the mean in order to obtain the 95% confidence interval.
Detailed explanation-3: -With a 95 percent confidence interval, you have a 5 percent chance of being wrong. With a 90 percent confidence interval, you have a 10 percent chance of being wrong. A 99 percent confidence interval would be wider than a 95 percent confidence interval (for example, plus or minus 4.5 percent instead of 3.5 percent).
Detailed explanation-4: -The general form for a confidence interval for a single population mean, known standard deviation, normal distribution is given by X ¯ − Z ( n ) ≤ ≤ X ¯ + Z ( n ) X ¯ − Z ( n ) ≤ ≤ X ¯ + Z ( n ) This formula is used when the population standard deviation is known.