In a survey of 1000 people, mean amount of money they spend on buying Starbuck's coffee per month is $19.40. Use z= 1.96 and o =45 a. What is the margin of error for this study? b. Give an interval that is likely to contain the exact mean amount of money people spend on Starbucks.

Q: Assume the average (mean) number of minutes a group of people meditate is 20 minute per day and has…

A: Solution: Let X :  A group of people mediate.  Assumed X be the normal distribution with mean 20…

Q: The mean can be thought of as the balancing point of a distribution. According to this description,…

A: Mean          A mean is the simple mathematical average of a set of two or more numbers. The mean…

Q: Use the sample statistics to test the claim that the mean score on a final exam is more than 83. x =…

A: STAT --> TESTS ---> T-test --> stats

Q: On a nationwide math test, the mean was 60 and the standard deviation was 7. If Roberto scored 90,…

A:

Q: The length of life of 220 incandescent 60-watt lamps was obtained and yielded the frequency…

A: Cumulative frequency: It can be calculated by adding the frequency of the first class interval to…

Q: In a survey of 1000 people, mean amount of money they spend on buying Starbuck’s coffee per month is…

A: Solution: a. Let X be the amount of money. From the given information, n=1000, x-bar=19.40, Z=1.96…

Q: A successful basketball player has a height of 6 feet 2 ​inches, or 188 cm. Based on statistics from…

A: Given the Z score of height of basket ball player is 1.95. The original height of the basket ball…

Q: A sample of the number of sick days used by employees at a clinic is as indicated: 0,    0,    1,…

A: Given data 0,0,1,1,2,4

Q: According to Chebyshev's rule, within 10 standard deviations from the mean, lies at least_ data of…

A: According to Chebyshev's rule, within 10 standard deviations from mean, lies at least 99% of the…

Q: video game c

A: given, sample size(n) = 1500 sample mean (x̄) = 115 sample stadard deviation (s) = 11

Q: Angela polled her first grade class about their family pets. The following data lists the number of…

A:

Q: Given the interval estimate for the mean (6.2, 17.6), the point estimate for the mean is

A: Solution: From the given information, the interval estimate for the mean is (6.2, 17.6).

Q: the data set has a size 50, how many observations lie within 2 standard deviations of the mean

A: From the provided information, Sample size (n) = 50 The observations lie within 2 standard…

Q: You want to know the percentage of utility companies that earned revenue less than 39 million or…

A: Given data You want to know the percentage of utility companies that earned revenue less than…

Q: Given the interval estimate for the mean (5.2, 14.4), the point estimate for the mean is and the…

A:

Q: The Virginia Cooperative Extension reports that the mean weight of yearling Angus steers is 1152…

A: Here mean = 1152 and SD = 84. z=(x-mean)/SD = (x-1152)/84

Q: (a.) Find the point estimate for the mean and standard deviation of the salaries of all the…

A: NOTE-AS PER POLICY I HAVE CALCULATED FIRST MAIN QUESTION ONLY  Now  Here Given the salary of 12…

Q: A line for tickets to a broadway show had a mean waiting time of 20 minutes with a statistic…

A: Given: Mean,  μ=20 Standard deviation, σ=5 Sample size, n= 200 Use normal approximation here, the…

Q: Using a spectrophotometric analytical technique, the glucose concentrations in a patient with mildly…

A: Given that  The data are 16.67, 16.66, 16.64, 16.30, 16.31, 16.70

Q: Companies who design furniture for elementary school classrooms produce a variety of sizes for kids…

A: According to the provided information, Mean (µ) = 39.2 Standard deviation (σ) = 1.9 The Z-score is…

Q: Find the Mean and Standard Deviation for the prompts below: A survey found that 21% of Americans…

A: Binomial Distribution :  A binomial distribution is a specific probability distribution. It is used…

Q: Find the range and standard deviation for the data items in the histogram below. 5 4 Frequency

A: From the histogram, The frequency table is, Data Frequency 10-20 2 20-30 5 30-40 5 40-50…

Q: Given the interval estimate for the mean (8.2, 18.6), the point estimate for the mean is and the…

A: Obtain the value of the point estimate of mean.   The value of the point estimate of mean is…

Q: Past records suggest that the mean annual income, u, of teachers in state of Utah is greater than or…

A: State the hypotheses.   Determine the type of test statistic used.   The type of test statistic…

Q: In order to set rates, an insurance company is trying to estimate the number of sick days that full…

A:

Q: For a random sample of 10 men, the mean head circumference is x-bar= 57.3 cm and the sample standard…

A:

Q: At Thomas Nelson Community College, the Pre-Test for Mathematics has 200 points on the test. The…

A:

Q: Many students did an exam, the mean was 15 and the standard deviation was 32 The highest mark was…

A: Given Mean μ=15, standard deviation σ=32  X=103

Q: A quantitative data set has a size of 50. At least how many observations lie within seven standard…

A: Suppose X is a random variable with expectation, μ and standard deviation, σ. Then, for any positive…

Q: .Use the data to lation mean and andard deviation

A: x (x-xbar)^2 92 22.09 103 39.69 99 5.29 108 127.69 86 114.49 94 7.29 90 44.89 102…

Q: A weight-loss clinic advertised that last month its patients, on average, lost 7 lb. Assuming that…

A: Here Given  Weight loss clinic advertised that last month its patients On average lost 7 lb.

Q: What percentage of the widget Weights lie between 55 and 79 ounces when the mean is 61 and the…

A: We have to  given probability...

Q: A quantitative data set has size 50. At least how many observations lie within three standard…

A: The size of the data set is 50.

Q: When computing a 95% CI for a population mean, the ____ is used as the point estimate.

A: Given that  When computing a 95% CI for a population mean, the ____ is used as the point estimate.…

Q: The quartiles of any distribution are the 25th and 75th percentiles. About how many standard…

A: 25th Percentile = P(Z <z ) = 0.25 For normal table  P(Z < -0.67 ) = 0.2514 Hence, 25th…

Q: Past records suggest that the mean annual income, u, of teachers in state of New York is less than…

A: Let X : annual income of 15 teachers from New york Y : annual income of 15 teachers from Illinois :…

Q: Given the interval estimate for the mean (8.2, 11.4), the point estimate for the mean is and the…

A: Given information- We have given the confidence interval estimate for the mean = (8.2, 11.4) We have…

Q: Given the interval estimate for the mean (5.2, 17.8), the point estimate for the mean and the margin…

A: Given, The interval estimate is      (5.2,17.8)

Q: A quantitative data set has a size 50. At least how many observations lie within 3 standard…

A: Suppose X is a random variable with expectation, μ and standard deviation, σ. Then, for any positive…

Q: A random sample of 15 college students were asked "How many hours per week typically do you work…

A: The frequency for each class interval is obtained by counting the number of data values that lie…

Q: The ratio of the mode of this distribution to the median is:

A:

Q: In an Oreo factory, the mean mass of a cookie is given as 40 g. For quality control, the standard…

A: In an Oreo factory, the mean mass of a cookie is given as 40 g. For quality control, the standard…

Q: The annual per capita consumption of bottled water was 33.3 gallons. Assume that the per capita…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: Past records suggest that the mean annual income,  μ1 , of teachers in state of Utah is greater…

A: The sample means of annual income of teachers in Utah and in Oregon are, The null hypothesis is,…

Q: Given the interval estimate for the mean (5, 15), the point estimate for the mean is ________, and…

A: Solution: From the given information, the interval estimate of the mean is (5, 15). Then, the point…

Q: A researcher in Des Moines, Iowa sampled 56 households and found the mean number of puppies per…

A: # sample size n=56  population mean mu=3.03  standard deviations=1.5  then to find 62nd percentile…

Q: Find the Mean and Standard Deviation for the prompts below: 5.)  A survey found that 86% of…

A: 5. Given: p=0.86n=121-p=0.14 The probability that 10 or more would have never been the victim of a…

Q: A man was out shopping buying 100 watermelons. He wanted to buy the largest fruit so he calculated…

A: We have to find out given probability..... As per guideline expert have to find out given first…

Q: A sociologist found that in a sample of 45 retired men, the average number of jobs they had during…

A: Given : population mean ,u = 7.2  population standard deviation,σ = 2.3

Q: For a random sample of 10 men, the mean head circumferences are x-bar = 57.3 cm, and the sample…

A: Given data:   The given sample size is n=10. The given mean head circumference is x=57.3 cm. The…

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.