A 95% confidence interval for a population mean is computed from a sample of size 400.Another 95% confidence interval will be computed from a sample of size 100 drawn from the same population. Choose the best answer to fill in the blank: The interval from the sample of size 400 will be approximately _____ as the interval from the sample of size 100. a) One-eighth as wide b) One-fourth as wide c) One-half as wide d) The same width e) Twice as wide f) Four times as wide g) Eight times as wide

Q: The pulse rates of 167 randomly selected adult males vary from a low of 39 bpm to a high of 119 bpm.…

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Q: A 95 percent confidence interval of the form p̂ ± E will be used to obtain an estimate for an…

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Q: a. Use the one-mean t-interval procedure with the sample mean, sample size, sample standard…

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A: Given : Highest observation=155 bpm Lowest observation=35 bpm Margin of error=E=3 bpm Significance…

Q: The pulse rates of 140 randomly selected adult males vary from a low of 45 bpm to a high of 121 bpm.…

A: Answer Given confidence interval =99%Margin of error [E] =2Max value =121Min value =45

Q: The pulse rates of 150 randomly selected adult males vary from a low of 42 bpm to a high of 108 bpm.…

A: Given: Maximum pulse rate = 106 bpm Minimum bpm = 42 Confidence level = 90% Margin of error (E) = 2

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Q: A simple random sample of 60 items from a population with o 9 resulted in a sample mean of 36. If…

A: Confidence interval:The (1-α) % confidence interval for population mean µ is given by:

Q: The pulse rates of 174 randomly selected adult males vary from a low of 36 bpm to a high of 96 bpm.…

A: Given: Maximum pulse rate = 96 bpm Minimum pulse rate bpm = 36 bpm Confidence level = 98% Margin of…

Q: in order to construct a 95% confidence interval for the population mean when the population…

A: It is an important fact in hypothesis testing problem .It is widely used in statistics .

Q: The best point estimator for the average wieght of current PBA players is ?

A: From the provided information  n=30 Σx=2645 And for taking each value square and sum of these values…

Q: The pulse rates of 142 randomly selected adult males vary from a low of 37 bpm to a high of 101 bpm.…

A: E = 4 bpm Confidence interval = 90%

Q: The pulse rates of 175 randomly selected adult males vary from a low of 41 bpm to a high of 109 bpm.…

A: Given,  Max = 109 Min = 41 E = 3

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Q: Using the variables listed in the table above, Describe each variable. (b) State for each variable…

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Q: The pulse rates of 161 randomly selected adult males vary from a low of 43 bpm to a high of 103 bpm.…

A: Introduction: The 100 (1 – α) % confidence interval for the population mean, μ, when the population…

Q: The pulse rates of 163 randomly selected adult males vary from a low of 39 bpm to a high of 107 bpm.…

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Q: A confidence interval for a population mean has a margin of error of 3.3. a) Determine the length…

A: Given data, Margin of Error(E)=3.3

Q: Solve the problem

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Q: Give the critical value, za/2 , for the 98% confidence level. A.) 2.33 B.) 1.645 C.) 2.575 D.) 1.96

A: For 98% CI

Q: The pulse rates of 154 randomly selected adult males vary from a low of 45 bpm to a high of 121 bpm.…

A: given data, CI=0.99E=4α=1-0.99=0.01Zc=Zα/2    =Z0.01/2    =Z0.0050    =2.576 [from excel function,…

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Q: ou are going to create a 95% confidence interval for a population proportion and want the margin of…

A: Given data, E=0.05 p=0.7 z-value at 95% confidence is Zc=1.96 sample size (n)=?

Q: The pulse rates of 174 randomly selected adult males vary from a low of 41 bpm to a high of 117 bpm.…

A: From the provided information, The pulse rates of 174 randomly selected adult males vary from a low…

Q: Using 90% confidence, determine how large a sample should be if he takes to estimate the average…

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Q: a. Use the one-mean t-interval procedure with the sample mean, sample size, sample standard…

A: (a) Obtain the 90% confidence interval for the population mean. The 90% confidence interval for the…

Q: The pulse rates of 149 randomly selected adult males vary from a low of 38 bpm to a high of 114 bpm.…

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Q: Assume 50 random samples of the same sample size are taken from a population, and a 90% confidence…

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Q: The pulse rates of 172 randomly selected adult males vary from a low of 41 bpm to a high of 105 bpm.…

A:

Q: The pulse rates of 166 randomly selected adult males vary from a low of 39 bpm to a high of 119 bpm.…

A: Given ,  low pulse rate ,L = 39 High pulse rate , H = 119 margin of error, (E) = 3 α = 0.10

Q: The pulse rates of 155 randomly selected adult males vary from a low of 35 bpm to a high of 99 bpm.…

A: The sample size is .The minimum value of sample data is  bpm. The maximum value of sample data is 99…

Q: In a previous study, it was found that p̂= .73 for a particular sample. Suppose we would like to…

A: Given information Error = 0.01 Confidence level = 0.98

Q: The pulse rates of 168 randomly selected adult males vary from a low of 39 bpm to a high of 115 bpm.…

A: Given that, the adult males vary from a low of 39 bpm to a high of 115 bpm. Using the range rule of…

Q: The pulse rates of 173 randomly selected adult males vary from a low of 42 bpm to a high of 114 bpm.…

A: (a) Obtain the value of the sample size using the range rule of thumb to estimate sigma. The value…

Q: The pulse rates of 164 randomly selected adult males vary from a low of 45 bpm to a high of 105 bpm.…

A: Confidence level = 98 % Error,E = 2 Lowest pulse rate = 45 highest pulse rate = 105 Zcric = 2.33

Q: The pulse rates of 153 randomly selected adult males vary from a low of 37 bpm to a high of 101 bpm.…

A: Given that  Randomly selected males (n) = 153  The pulse rates vary from  Low = 37 bpm High = 101…

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Q: The pulse rates of 164 randomly selected adult males vary from a low of 41 bpm to a high of 121 bpm.…

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Q: a. The 95% confidence interval about u isto (Round to three decimal places as needed.) b. The margin…

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Q: The pulse rates of 167 randomly selected adult males vary from a low of 41 bpm to a high of 101 bpm.…

A: Given,minimum value=41 bpmmaximum value=101

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Q: Data table: 78 342 414 346 164 218 260 358 202 142 330 32 138 178 The 95% confidence interval for…

A: from the given data table : Sample Size, n = 14 Sample Mean, x̄ = 228.71429…

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.