Cxaliple 10.19 The standard deviation of a certain population is about 5 units. How large a simple Tandom sample should be if the standard error of the sample mean is to be 1? How large it should be for the standard error of 0.1?
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Q: Claim: The standard deviation of pulse rates of adult males is less than 12 bpm. For a random sample…
A: Answer - Claim: The standard deviation of pulse rates of adult males is less then σ = 12 bpm.…
Q: Claim: The standard deviation of pulse rates of adult males is more than 12 bpm. For a random sample…
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Q: Claim: The standard deviation of pulse rates of adult males is more than 10 bpm. For a random sample…
A: From the provided information, Sample size (n) = 173 Standard deviation (s) = 10.4
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Q: Claim: The standard deviation of pulse rates of adult males is less than 12 bpm. For a random…
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Q: Claim: The standard deviation of pulse rates of adult males is less than 10 bpm. For a random sample…
A: That is, there is no evidence to conclude that the population standard deviation of the pulse rates…
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Q: If the variance of the water temperature in a lake is 24° , how many days should the researcher…
A: Solution: From the given information, confidence level is 0.95, σ2=24 and E=3.
Q: Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random…
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A: According to the given information in this question We need to calculate the standard deviation
Q: Claim: The standard deviation of pulse rates of adult males is more than 10 bpm. For a random sample…
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Q: H0:μ=27.7H0:μ=27.7 H1:μ<27.7H1:μ<27.7 Your sample consists of 20 subjects, with a mean of 27.3 and…
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A: Given: μ=2.1σ=0.5n=70x¯=2.03 Hypothesis: Null hypothesis: H0: μ=2.1Alternative hypothesis: H1:…
Q: Claim: The standard deviation of pulse rates of adult males is more than 12 bpm. For a random sample…
A: Solution: The given claim is that the standard deviation of pulse rates of adult males is more than…
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A: simple formula of sample mean has used and solve.
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Q: 3.1.15 Question Help Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69…
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Q: ou want to obtain a sample to estimate a population mean. Based on previous evidence, you believe…
A: Solution: Given information: Population standard deviation= σ=43.2 Margin of error = E= 5 Level…
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Q: Claim: The standard deviation of pulse rates of adult males is more than 10 bpm. For a random sample…
A: Given that n = 134 , s = 11.2 , σ = 10
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- Ages of Gamblers The mean age of a random sample of 23 people who were playing the slot machines is 49.6 years, and the standard deviation is 6.8 years. The mean age of a random sample of 35 people who were playing roulette is 54.3 with a standard deviation of 3.2 years. Can it be concluded at a=0.01 that the mean age of those playing the slot machines is less than those playing roulette? Use μ1 for the mean age of those playing slot machines. Assume the variables are normally distributed and the variances are unequal. State the hypothesis and identify critical and z-values.Pls help ASAP ASAP.Claim: The standard deviation of pulse rates of adult males is less than 11 bpm. For a random sample of 164 adult males, the pulse rates have a standard deviation of 9.5 bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.) ***
- Question TI Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of O°C and a standard deviation of 1.00 C. A single thermometer is randomly selected and tested. Let Z represent the reading of this thermometer at freezing. What reading separates the highest 1.41% from the rest? That is, if P(z > c) = 0.0141, find c. C = °C Add Work Check AnswerA population of values has an unknown distribution with μ=109.2μ=109.2 and σ=15.3σ=15.3. You intend to draw a random sample of size n=88n=88.What is the mean of the distribution of sample means?μ¯x=μx¯= ____________ (Please enter an exact answer.)What is the standard deviation of the distribution of sample means?σ¯x=σx¯=_____________ (Please report your answer accurate to 2 decimal places.)This Is A REVIEW! Please help and show work on paper
- Claim: The standard deviation of pulse rates of adult males is less than 10 bpm. For a random sample of 173 adult males, the pulse rates have a standard deviation of 8.9 bpm. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed)Calcium levels in people are normally distributed with a mean of 9.7 mgdL and a standard deviation of 0.5 mgdL . Individuals with calcium levels in the bottom 10% of the population are considered to have low calcium levels. Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.QUESTION 30 A commonly used test of intelligence (IQ) results in a normal distribution with a mean of 100 and a standard deviation of 15. What percentage of the population has an IQ between 70 and 130? O34 48 50 O 68 96 QUESTION 31 Click Save and Submit to save and submit. Click Save All Answers to save all answers. 3325 Chapter 1.pptx 3325 Chapter 11.pptx 3325 Chapter 14.pptx 3325 Chapter 1..pptx MacBook Air
- 10 The scores on a test are normally distributed with a mean of 70 and a deviation of 14, What is the score that is 1 1/2 standard deviations below the mean? A score of ______ is 1 1/2 standard deviations below the mean.H0:μ=52.9H0:μ=52.9H1:μ<52.9H1:μ<52.9Your sample consists of 49 subjects, with a mean of 52.7 and standard deviation of 2.44.Calculate the test statistic, rounded to 2 decimal places. t=t=You want to obtain a sample to estimate how much parents spend on their kids birthday parties. Based on previous study, you believe the population standard deviation is approximately σ=25.3σ=25.3 dollars. You would like to be 98% confident that your estimate is within 4 dollar(s) of average spending on the birthday parties. How many parents do you have to sample?n = --------------