A study shows that the normal time that a customer occupied a table in a fine dine restaurant is 1.2 hours with a standard deviation of 0.4 hour. A food entrepreneur wants to find the probability that customers occupying 25 tables would have an average time of less than 1 hour. Question: 1. What is the value of the mean of the sample means? A. 0.3 B. 1 C. 1.2 D. 25

Q: How many percent of adult rabbits are under 28cm in length?

A: An adult rabbit's average length is 30cm, with a standard deviation of 4cm.  x= adult rabbit's…

Q: Some fruit are sold whose weights follow a normal distribution such that X~N(80, 15) If the lightest…

A:

Q: Solve the following problems: ( Ungrouped Data) The following data are the numbers of deaths of…

A: Given data is3, 4, 5, 5, 6, 6, 7, 8, 9, 9, 10, 11, 11, 11, 12, 14, 15, 15,17, 18sample size(n)=20

Q: The number of books sold weekly for 6 Weeks by a book store 69 65 66 71 68 73 Class Frequency 61-65…

A: Formula to find midpoint is , Midpoint =Lower limit + upper limit2

Q: Suppose that the local sales tax rate is 7% and you purchase a car for $14,600. a. How much tax is…

A: Find how much tax is paid? what is the total cost?

Q: 9 Some fruit are sold whose weights follow a normal distribution such that X-N(90, 16) If the…

A: We have given the normal distribution.  Mean = 90 Variance= 16 Standard deviation = 4

Q: The population of a country follows a normal distribution with mean height 180 cm and standard…

A: (7) Let X be the random variable from normal distribution with mean (μ) = 180 cm and standard…

Q: certain college wants to estimate the proportion of Senior High School students who want to pursue a…

A: Given that ;  Sample size ( n) = 600   X = 321 P^ = x / n =  At 95 % confidence interval  By using…

Q: The sample space listing the eight simple events that are possible when a couple has three children…

A: The sample space of a couple having four children is given by…

Q: Find the probability that: a) No customer patronises the coffee shop in a time interval of 6…

A: Here AS PER POLICY I HAVE CALCULATED FIRST MAIN QUESTION ONLY  Here given, The numbers of customers…

Q: The amount of time spent in prison has a mean of 5.2 years and a standard deviation of 1.3 years. A…

A: Solution-: Given: μ=5.2,σ=1.3,n=16 We determine the z crit value =?

Q: random samples of 529 are taken from a large population and studied. It was found that σx¯ = 9.94.…

A:

Q: The number of books sold weekly for 6 Weeks by a book store 69 65 66 71 68 73 Class Frequency 61-65…

A: Grouped mean =68.833

Q: Calculate the range.

A: Range  = maximum - minimum

Q: A random sample is drawn from a normally distributed population of  unknown standard deviation.…

A:

Q: A study was conducted to determine the effect of cigarette smoking on the carbon monoxide diffusing…

A: The sample size n is 20.

Q: Find the P-value for the indicated hypothesis test. Round all proportions and standard scores to two…

A: The hypothesized proportion is 0.08.

Q: A researcher is interested in investigating the relationship between sugar consumption and weight…

A: The objective is to determine Treatment in the given experiment.

Q: 1. You want to know the number of fans at the Miami Dolphins and Dallas Cowboys game that think the…

A:

Q: were randomly assigned to two groups. The treatment group consisted of 200,024 children given a…

A: Given

Q: A researcher is conducting a study to examine what factors influence older adult's Binge Drinking…

A: There are two independent samples which are women and men. We have to test whether there is a…

Q: Researcher 2 also studied 500 patients that visited a regional hospital in the last year. He…

A: The appropriate nature of the study, which essentially measures the risk of a heart attack after…

Q: A factory produces bars of chocolate that follow a Normal Distribution with a mean weight of 70g and…

A: Given that.  X~Normal( μ = 70 , ?2 = 9) μ =70 , ?=3

Q: Percentage Who parts (a) through (d) below. Won't Try Don't Approve of Marriage Equality Sushi…

A: (a)   Obtain the correlation coefficient between the percentage of people who wont try sushi and…

Q: Trend values 40 | 39 40 | 40 39 39 39 39 39 39 40 40 Seasonal variations 10 |-9 8 3 - 11 -8 -4-5 -…

A:

Q: 29 is I. Discrete II. Qualitative II. Quantitative IV. Continuous Choose all the correct…

A: Solution

Q: Let’s say that in a random sample of 80 college students, 32 of them sign up for Disney+. This study…

A:

Q: Let X be a random variable that represents the level of glucose in the blood (milligrams per…

A: Given that Let X be a random variable that represents the level of glucose in the blood (milligrams…

Q: 6 A factory produces bars of chocolate that follow a Normal Distribution with a mean weight of 70g…

A: Mean(µ) = 70 Variance (σ2 ) = 9Standard deviations (σ) = √Varince(σ2)=√9 = 3X ~ N (µ, σ )= N(70, 3)

Q: 4. Arranging the possible children of a couple with 3 children given that . second child is a girl.

A: Given:  A couple have 3 children(Boy(B) ,Girl(G))  Then to write sample space 3 children given that…

Q: 9 Some fruit are sold whose weights follow a normal distribution such that X~N(90, 16) If the…

A: Given Data : Population Mean,μ = 90 Population Standard Deviation,σ = √16 = 4

Q: The indices for the year 1985 with 1975 as the base year were as follows : Year : 1975 1980 1985…

A:

Q: Suppose that historically, 66% residents in an apartment building own at least one pet. If there are…

A:

Q: A teacher wants to know if there is a significant difference in reading ability between a sample of…

A: Solution-: We find the correct test for the given scenario.

Q: A sample of 149 was found to have a standard deviation of 6.9. An interval estimate for μ based on…

A: Given that  n=149 , S=6.9  C.I=(25.93275 , 28.58725)

Q: chapter 8, question  a simple random sample size n=13 is obtained from a population u=66 and q=15…

A: Given that ; μ = 66 ? = 15  n = 13 By using standard normal distribution to solve this problem.

Q: The 87.19% confidence interval estimate for p was (0.2, 0.38). Find p′ and ME. pp′=  ME=

A: Given87.19% confidence interval estimate for p was (0.2 , 0.38)

Q: In an old study, the weight of a certain breed of pig had a standard deviation of 3.8 pounds. What…

A: Solution

Q: An electronic manufacturer produces lampshades with a life span of approximately normally…

A: Obtain the 95% confidence interval for the average life span of all the lampshades produced. The 95%…

Q: Convert the trend equation, Y. forward the origin by half a month, given that the trend origin is…

A:

Q: >Warning i 5281. Command name: GET FILE >SPSS Statistics is running in Unicode encoding mode. This…

A: Descriptive statistics   Mean N Std. dev Std. error bart0 35.833 24 18.33663 3.74295 bart8…

Q: If the interest rate is zero, the future value interest factor equals  a. 2.00 b. -1.00 c. 1.00…

A: We have given that Interest rate (r) = 0 We have to find the future value interest factor equals to

Q: Obtain the straight line trend equation and tabulate against each ye trend and short term…

A:

Q: In which scatter plot is r= -0.7? (A) (B) (C) (D) . (E) (F) ... The graph ) shows a scatter plot…

A: we have given that r = - 0.7

Q: A college professor suspects that students at his school are getting less than 8 hours of sleep a…

A:

Q: Sugar Consumption A researcher is interested in investigating the relationship between sugar…

A: The objective is to determine  uses principle  in given study the investigator is interested  in…

Q: 1llustration: 23.3. C-Chart. Following 20 figures correspond to the number of defects (spots) in 20…

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Q: Illustration 22.2. Compute the gross and net reproduction rates. from the data given below: Age…

A:

Q: Refer to the following ANOVA table and find the missing values. (Give your answers correct to two…

A: Given that  Source df SS MS F Factor 4       Error   38     Total 25 162.8