The pulse rates of 174 randomly selected adult males vary from a low of 45 bpm to a high of 105 bpm. Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we want 90​% confidence that the sample mean is within 2 bpm of the population mean. Complete parts​ (a) through​ (c) below.

Q: When we sample from an infinite population, what happens to the standard error of the mean if the…

A: Standard Error: Standard Error increases if sample size decreases. Standard Error decreases if…

Q: The pulse rates of 152 randomly selected adult males vary from a low of42 bpm to a high of 110 bpm.…

A: One of the measures of dispersion is range which is computed by taking the difference of the minimum…

Q: A photoconductor film is manufactured at a nominal thickness of 0.65 mm. The product engineer wishes…

A: Given : A photoconductor firm is manufactured at a nominal thickness of 0.65 mm . The product…

Q: Assume that females have pulse rates that are normally distributed with a mean of mu equals 74.0

A:

Q: Assume that the sample is a simple random sample obtained from a normally distributed population of…

A: C1 = 0.99P-z<p<z = 0.99∴ z = 2.576 ∵ z tableE = 1%  = 0.01  , here p =q = 0.5E = z×p1-pn

Q: A photoconductor film is manufactured at a nominal thickness of 25 mils. The product engineer wishes…

A: Given:   Mean Standard deviation Sample size For 25 mils x¯1=1.13 s1=0.11 n1=8 For 20 mils…

Q: How large the sample should be taken to estimate the average medical expense of the HHs in the city…

A: Solution: Given information: Margin of Error = E = 50 Population standard deviation = σ= 120 Assumed…

Q: The pulse rates of 153 randomly selected adult males vary from a low of 41 bpm to a high of 121 bpm.…

A: Find z-critical value:…

Q: The pulse rates of 174randomly selected adult males vary from a low of 39 bpm to a high of 111 bpm.…

A: Given: Low value=39bpmHigh value=111bpmMargin of error(E)=3

Q: The mean height for a sample of n = 81 women is x = 63.5 inches, and the standard deviation is s =…

A:

Q: The pulse rates of 146 randomly selected adult males vary from a low of 39 bpm to a high of 119 bpm.…

A:

Q: The pulse rates of 179 randomly selected adult males vary from a low of 43 bpm to a high of 103 bpm.…

A: Given : The pulse rates of 179 randomly selected adult males vary from a low of 43 bpm to a high of…

Q: Find the minimum sample size required to estimate the mean pulse rate of adult males. Assume that we…

A: Given: Sample size (n) = 174 Standard deviation (σ) =10.8 bpm Margin of error (E) = 2 bpm Confidence…

Q: The pulse rates of 155 randomly selected adult males vary from a low of 40 bpm to a high of 108 bpm.…

A:

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

A: Given that  The pulse rates of 174 randomly selected adult males vary from low of 41 bpm to high of…

Q: Use the given information to find the minimum sample size required to estimate an unknown population…

A:

Q: The pulse rates of 155 randomly selected adult males vary from a low of 44 bpm to a high of 108…

A:

Q: Women have pulse rates that are normally distributed with a mean of 77.5 beats per minute and a…

A: Given information Mean µ = 77.5 beats per minute Standard deviation σ = 11.6 beats per minute

Q: The mean life of a particular brand of light bulb is 1000 hours and the standard deviation is 50…

A: Introduction: Denote X as the random variable denoting the lifetime of a randomly selected bulb. It…

Q: A sample of 900 members has a mean 3.4 cms and S.D. 2.61 cms. Obtain the 95% confidence limits of…

A:

Q: The brain volumes (cm3​) of 20 brains have a mean of 1052.4 cm3 and a standard deviation of 122.2…

A: It is given that the mean is 1,052.4 and the standard deviation is 122.2.

Q: researcher estimates the 95% CI for a sample with a mean of M = 3.26 and a standard error

A: The formula for computing upper confidence limit is,

Q: The pulse rates of 177 randomly selected adult males vary from a low of 38 bpm to a high of 114…

A: Assume, X be the random variable representing the pulse rates (in bpm). n be the minimum sample…

Q: The pulse rates of 142 randomly selected adult males vary from a low of 40 bpm to a high of 116 bpm.…

A: Range rule of thumb to estimate standard deviation is: Therefore the standard deviation is 19.

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: With a sample size of 400, the calculated standard error of mean is 2 with a mean of 120. What…

A:

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…

Q: The mean score, x, on an aptitude test for a random sample of 6 students was 61. Assuming that a =…

A: Given Data : Sample Size,n = 6 Sample Mean,x̄ = 61 standard deviation,σ = 16

Q: The breaking strength X(kg) of a certain plastic block is normally distributed with a mean of 1250kg…

A: The breaking strength X(kg) of a certain plastic block is normally distributed with a mean of 1250kg…

Q: The pulse rates of 171 randomly selected adult males vary from a low of 35 bpm to a high of 103 bpm.…

A: Given data Confidence interval = 0.95 Significance level(α) = 1- 0.95 = 0.05 n = sample size Error =…

Q: The pulse rates of 155 randomly selected adult males vary from a low of 42 bpm to a high of 114…

A: From the provided information, Margin of error (E) = 2 Confidence level = 98% The lowest value in…

Q: The pulse rates of 153 randomly selected adult males vary from a low of 41 bpm to high of 121 bpm.…

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

Q: A manufacturer producing cocacola drinks wanted to set the specification of production to achieve…

A:

Q: A sample of size 50 will be drawn from a population with mean 76 and standard deviation 14. Find the…

A:

Q: A sample obtained from a population with σ = 12 has a standard error of σx̅ = 2 points. How many…

A: We have given that,  The population standard deviation (sigma) = 12 And standard error (sigmax) = 2…

Q: The standard deviation of measurements of a linear dimension of a mechanical part is 0.14 mm. What…

A:

Q: Use z scores to compare the given values. Based on sample data, newborn males have weights with a…

A: Given: For newborn males: Meanμ=3293.7Standard Deviationσ=551.3 The z-score for X=1700 g is given…

Q: A University Safety officer wants to estimate the proportion of students who agree to have a limited…

A: Solution: Given information: Margin of error = E = 0.04 C = 90%= 0.90 confidence level.…

Q: The Central Limit Theorem says that the standard deviation of the sampling distribution of the…

A: we have to choose the correct оption.The central limit theorem says that the mean of the sampling…

Q: A photoconductor film is manufactured at a nominal thickness of 25 mils. The product engineer wishes…

A: From the given information, we have  Sample 1 Mean (x1-bar) = 1.15 standard deviation (s1) = 0.11…

Q: The pulse rates of 145 randomly selected adult males vary from a low of 38 bpm to a high of 110 bpm.…

A: The pulse rates of 145 randomly selected adult males vary from a low of 38 bpm to a high of 110 bpm.

Q: State the t critical value that would be used for a 99% interval based on a sample size of 37.

A: Given information- Sample size, n = 37 Confidence level, c = 99% So, significance level (α) = 0.01…

Q: The pulse rates of 168 randomly selected adult males vary from a low of 39 bpm to a high of 111…

A: Obtain the minimum sample size required to estimate the mean pulse rate of adult males.   The…

Q: The pulse rates of 152 randomly selected adult males vary from a low of 40 bpm to a high of 104 bpm.…

A: Given that  Randomly selected males (n) = 152 Minimum value = 40 bpm Maximum value = 104 bpm…

Q: The pulse rates of 162 randomly selected adult males vary from a low of 42 bpm to a high of 102 bpm.…

A: Given n=162 Min value=42 High value=102

Q: The pulse rates of 161 randomly selected adult males vary from a low of 37 bpm to a high of 117 bpm.…

A: It is given that the sample size is 161. The adult males vary from a low of 37 bpm to a high of 117…

Q: The Project Manager found that distribution of the amount of gravel (in tons) sold by a particular…

A: Given: X is a random variable of the amount of gravel (in tons) sold. The probability distribution…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.