Start your trial now! First week only $4.99!*arrow_forward*

Question

A simple random sample is taken from a population and yields the following data for a variable of the population:

20 | 2 | 6 | 2 | 12 | 6 |

9 | 8 | 16 | 8 | 21 |

Find a point estimate for the population mean (i.e., the mean of the variable).

Tagged in

Math

Statistics

Find answers to questions asked by students like you.

Q: Emergency Room Traffic. Desert Samaritan Hospital in Mesa, Arizona, keeps records of emergency room ...

A: GivenThe times between arriving patients have mean of 8.7 minutes and standard deviation of 8.7 minu...

Q: ZIP Code If you randomly select five digits, each between 0 and 9, with repetition allowed, what is ...

A: There are 10 possible ways for selecting each digit as they are,

Q: Job Applicants The Society for Human Resource Management conducted a survey of 347 human resource pr...

A: (a)Here, the number of respondents or the human resource professionals are 347 and 73% reported that...

Q: Gender-Selection Method As of this writing, the latest results available from the Microsort YSORT me...

A: Answers will vary. One of the possible answers is given below:Step-by-step software procedure to gen...

Q: Corporate Officers and Committees The Digital Pet Rock Company was recently successfully funded via ...

A: a.From the given information, strategic planning committee with four different members and there are...

Q: A data set with roughly a bell-shaped distribution has mean 45 and standard deviation 12. Approximat...

A: The percentage of the observations lie between 33 and 57 is obtained below:Let X be an observation f...

Q: A local store is having a sale. All shoes are 40% off. If a pair of shoes normally costs $13.72 plus...

A: Note:Hey there! Thank you for posting the question. Since exact value is not given, from the given i...

Q: Which normal distribution has a wider spread: the one with mean 1 and standard deviation 2 or the on...

A: The one with the larger spread is the one with the larger standard deviation.

Q: Ages Number of students 15-18 4 19-22 5 23-26 6 27-30 7 31-34 4 35-38 10 Based on the...

A: Cumulative Frequency:

Q: Testing Claims About Proportions. In Exercises 9–32, test the given claim. Identify the null hypothe...

A: Click to see the answer

Q: Pets. According to JAVMA News, a publication of the American Veterinary Medical Association, roughly...

A: Click to see the answer

Q: Party Mix DJ Marty T is hosting a party tonight and has chosen 8 songs for his final set (including ...

A: The number ways in which 8 different songs playlist can be arranged in which the order matters is,8!...

Q: State the two basic properties of every density curve.

A: A density curve is a smooth curve, used to identify the shape of the distribution.It represents the ...

Q: Under what circumstances is using a normal probability plot to assess the normality of a variable us...

A: Here, it is observed that the normal probability plot determines the shape of the distribution bette...

Q: Answer true or false to each statement. Explain your answers. a. Two normal distributions that have ...

A: a)The statement is true because the graph is symmetric to the mean irrespective of standard deviatio...

Q: Win $1 Billion Quicken Loans offered a prize of $1 billion to anyone who could correctly predict the...

A: a. Number of games required to get 1 championship team from the field of 64 teams:There are 64 teams...

Q: How long does it take to finish the 1161-mile Iditarod Dog Sled Race from Anchorage to Nome, Alaska?...

A: (a)The class width is calculated by using formula,

Q: Regarding multiple linear regression analysis: a. What sum of squares is made as small as possible ...

A: a)Method of least squares:

Q: Life Insurance in Force. The American Council of Life Insurers provides information about life insur...

A: a)

Q: Blood Pressure Medication. A medical researcher wants to determine factors that affect a patient’s r...

A: (a)Justification:Response variable:Response variable in a regression equation is the dependent varia...

Q: A simple random sample is taken from a population and yields the following data for a variable of th...

A: Point estimate:Point estimate is the single value obtained from point estimation on a set of sample ...

Q: help

A: Selection of number of classes:“2 to the k rule” suggests that the number of classes is the smallest...

Q: A,B, and C are mutually exclusive events such that P(A) = 0.2,P(B) = 0.6, and P(C) = 0.1. Find P(A o...

A: The formula for P(A or B or C) is given below:

Q: *TVs and DVDs. According to Nielsen Media Research, 98.6% of (U.S.) households own a TV and 85.2% of...

A: a.According to Nielsen Media Research, 98.6% of households own a TV and 85.2% of the households owns...

Q: Phone Survey Subjects for the next presidential election poll are contacted using telephone numbers ...

A: The probability can be calculated as:

Q: The students in the HS3333 course recently took an exam and these were the scores: 76, 88, 67, 80...

A: Given that,76 88 67 80 44 65 50 98 5 45 23 44 65 78 66 56 8 76 87 29

Q: Is a probability distribution defined if the only possible values of a random variable are 0, 1, 2, ...

A: Requirements:

Q: Regarding z-scores: a. How is a z-score obtained?b. What is the interpretation of a z-score?c. An ob...

A: a.Z-score:The Z-score measures a particular value’s relationship to the mean in a group of values. I...

Q: Coffee Talk A study on the enhancing effect of coffee on long-tenn memory found that 35 participants...

A: (a)Justification:Here, the probability value is 0.049 which is less than 0.05, which shows that ther...

Q: Powerball: Poisson Approximation to Binomial There is a 1/292,201,338 probability of winning the Pow...

A: Requirements for using the Poisson distribution as an approximation to binomial distribution are as ...

Q: A variable has the density curve whose equation is y = 1 for 0< x< 1, and y = 0 otherwise. a. ...

A: (a)

Q: Dispensing Coffee. A coffee machine is supposed to dispense 6 fluid ounces (fl oz) of coffee into a ...

A: Note:Hey there! Thank you for posting the question. However, since your question has more than 3 sub...

Q: Age-adjusted death rates are used to: Compare deaths in persons of the same age group Determine t...

A: Age-adjusted death rates can be defined as the death rate that helps in controlling the effects of d...

Q: Find the standard deviation (s) for the following: 8, 9, 8, 5, 6

A: The mean of the given numbers is obtained as follows:

Q: Why is sampling often preferable to conducting a census for the purpose of obtaining information abo...

A: Taking a sample is speedy and more cost effective than carrying out a census, and more knowledge abo...

Q: Something Fishy The National Oceanic and Atmospheric Administration (NOAA) inspects seafood that is ...

A: Click to see the answer

Q: Explain in detail what a normal probability plot is and how it is used to assess the normality of a ...

A: Normal probability plot:The plot for the observed values of a variable versus the normal scores is r...

Q: Powerball As of this writing, the Powerball lottery is run in 44 states. Winning the jackpot require...

A: The number of ways to selecting five numbers between 1 and 52 is,

Q: *Sweet Sixteen. In the NCAA basketball tournament, 64 teams compete in 63 games during six rounds of...

A: The formula for combination is given below:

Q: How do we denote the statistics used to estimate a. y-intercept of the population regression plane? ...

A: a) The graph of the population regression equation is shown below. The y intercept in the equation i...

Q: Regarding the estimate of the conditional standard deviation,σ,, which of the three sums of squares ...

A: Justification:Estimate of the conditional standard deviation:

Q: Suppose that a sample is to be taken without replacement from a finite population of size N. If the ...

A: a).Since the sample is to be taken without replacement, there is a possibility of only one sample. B...

Q: Testing Claims about Proportions. In Exercises, test the given claim. Identify the null hypothesis, ...

A: In this case, the preceding Exercise is considered as follows:

Q: In Exercises 1–5, assume that 74% of randomly selected adults have a credit card (based on results f...

A: Define the random variable x as the number of adults having credit card. Here, the number of adults ...

Q: Sketch the normal curve having the parameters a. µ = -1 and σ = 2.b. µ = 3 and σ = 2.c. µ = -1 and σ...

A: (a)Software procedure:Step by step procedure to draw the normal distribution using MINITAB software....