Suppose it is known that in a certain community 30% of the household have a micro-wave oven. if we select a simple random sample of 19 households from this population, how many would we expect to have mirco-waves ovens?

Q: There are different modeling methods of regressions (enter, hierarchical, and stepwise). Discuss…

A: Regression Regression could be a statistical technique that relates a variable quantity to at least…

Q: Your medical research team is investigating the mean cost of a 30-day supply of a certain heart…

A: Givenclaim is pharmaceutical company thinks that the mean cost is less than$95

Q: ges Number of students 15-18 5 19-22 8 23-26 10 27-30 8 31-34 8 35-38 10 Based on the frequency…

A: Ages Number of students 15-18 5 19-22 8 23-26 10 27-30 8 31-34 8 35-38 10 total  n =…

Q: When a population is small, it is not practical to determine its mean and standard deviation by…

A: Farmula used

Q: Test the claim that the average weight of a new SUV is 1,940 kg, if a sample of 309 vehicle weights…

A: Given,sample size(n)=309sample mean(x¯)=1,931standard deviation(s)=61.7α=0.05and degrees of…

Q: A new iron supplement is being tested to see if it can increase the mean of ferritin levels. Study…

A: Given Information: Group 1: Sample size n1=30 Sample mean x¯1=43 Sample standard deviation s1=13…

Q: ider the following box plots for Data Set A and Data Set B. 88 45 -∞ 45 50 50 52 52 55 56 55 58.5 60…

A: Given graphs is

Q: If X represents a random variable coming from a normal distribution and P(X 5.3) = 0.74. O True O…

A: Given: P(X<5.3) = 0.26 P(X>5.3) = 0.74

Q: State the appropriate null and alternative hypotheses. ⒸM₂: MO ⒸM₂ M₂ TO ⒸM₂ M₂ O ⒸM₂: My O M₂: MO…

A: Frist we make table :   Velocity(m/s)     Swimmer Water x Guar Syrup y di=x-y di2 1 0.9 0.93…

Q: The average number of miles (in thousands) that a car's tire will function before needing…

A:

Q: A regression was run to determine if there is a relationship between hours of study per week (x) and…

A: The value of a is 6.188 and the value of b is 31.83.

Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

A:

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

A: Given Information: A researcher is interested in examining the relationship between high school…

Q: Jamison Kovach Supply Company manufactures paper clips and other office products. Although…

A: Given data: Sample 1 2 3 4 5 6 7 8 9 10 Defective 5 7 2 6 6 5 5 5 2 11

Q: Find the area of the shaded region. The graph depicts the standard normal distribution of bone…

A: From the provided information, Mean (µ) = 0 Standard deviation (σ) = 1

Q: An adventure company runs two obstacle courses, Fundash and Coolsprint. The designer of the courses…

A:

Q: A state official wants to know which party the voters in his state feel is best qualified to lead…

A: It is given that, he mails a questionnaire on this subject to an SRS of 1600 voters in his state.

Q: There are 4 roses in a vase of 13 flowers. The rest are daisies.   (a) What is the ratio of…

A: Given,no.of roses in a vase=4Total no.of flowers in the vase=13no.of daisies in a vase=13-4=9

Q: The drying rate in an industrial process is dependent on many factors and varies according to the…

A: Given, Minutes Relative frequency 3 0.22 4 0.36 5 0.28 6 0.1 7 0.04

Q: Occasionally researchers will transform numerical scores into nonnumerical categories and use a non…

A: Given: Occasionally, instead of using the standard parametric statistic, researchers will convert…

Q: Find the margin of error and 95% confidence interval for the following study. A survey of 1857…

A:

Q: Use the table from the Theoretical Distribution section to calculate the following answers. Round…

A: Given: From the previous answer, x Frequency Probability 0 1 0.04 1 2 0.08 2 3 0.12 3 7…

Q: A researcher claims that the proportion of smokers in a certain city is less than 22%. A random…

A:

Q: In a large department store, the owner wishes to see whether the number of shoplifting incidents per…

A: Given claim: There is a difference in the number of shoplifting incidents before and after the…

Q: State whether the standardized test statistic t indicates that you should reject the null…

A: Given,t-critical value(t0)=1.703and the given test is right-tailed test.

Q: Question 4 (a) A sample of test scores is obtained. The scores are displayed as follows: 11, 16, 19,…

A: 4)a)Given data is11, 16, 19, 15, 7, 8, 10significance level(α)=1%=0.01

Q: The percent of fat calories that a person in America consumes each day is normally distributed with…

A:

Q: Q6. For the following set of data from five participants showing Hours of Sleep and Results in a…

A: Given data: Hours of sleep Dexterity 7 8 8 8 9 9 10 10 10 15

Q: An IQ test is an assessment that measures a range of cognitive abilities and provides a score that…

A:

Q: the serum HDL c women. Following is a sample of 36 HDL levels (in based on the results of that…

A: Hi! Thank you for the question, As per the honour code, we are allowed to answer three sub-parts at…

Q: State the null and alternative hypothesis b) Determine the critical value by using t-table c)…

A: It is given that  x̅1 = $5.46,   x̅2 = $5.12 s1 = $0.89,    s2 = $0.79 n1 = 22,      n2 = 30   Note:…

Q: A number cube is rolled and a coin is tossed. The number cube and the coin are fair. What is the…

A: GivenA number cube is rolled and coin is tossed

Q: According to a report by the U.S. Fish and Wildlife Service, the mean length of six-year-old rainbow…

A:

Q: Packets of flour packed by a particular machine have masses which are normally distributed with mean…

A: Given information:- Mean=500 gramS.D=20 gram 2% of the packets are rejected for being underweight…

Q: Event A : The sum is greater than 9 . Event B : The sum is divisible by 5 . Write your answers as…

A: Given:  Pair of dice thrown with six faces then sample space  S=(1,2,3,4,5,6)* (1,2,3,4,5,6)  Let x…

Q: How can I perform a confidence interval for female students graduating Total# of female students:…

A: Given: Total number of female students N = 36,143 Total number of female graduates n = 27436 Sample…

Q: ← A baseball analytics specialist wants to determine which variables are important in predicting a…

A: Provided data, Wins Earned run average Runs scored per game 89 4.22 4.59 93 4 5.42 78 4.1…

Q: SECTION 2 1. A box contains a total of 100 parts that were manufactured on two machines, A and B. 55…

A: Given: let as consider the two machines  A and B which produce 100 parts of material. In the…

Q: Question 3 The British chocolate manufacturer Cadbury in Birmingham is well-known for offering a…

A:

Q: A magazine includes a report on the energy costs per year for 32-inch liquid crystal display (LCD)…

A: a)   Suppose σ2 is the population variance of energy costs per year for 32-inch liquid crystal…

Q: b) The following table shows the time spent in reading a book by a group of standard six students…

A: First we calculate mid value (X).  X=( lower limit+upper limit of the class)/2     Mean is 46.9615…

Q: An IQ test is developed such that the mean quotient is 100 and standard deviation is 12. It is given…

A: According to the given information in this question There are more than three subparts according to…

Q: 3 S 9 B 32454 535 389 229 459 1 440

A: We know that a statistical indicator of the strength of the association between two variables'…

Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…

A: Solution: Given information: n=15 Sample size  x= 79.2 Sample mean s= 23.1 Sample standard deviation…

Q: A study was done to look at the relationship between number of vacation days employees take each…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: ← Find the critical value(s) and rejection region(s) for the indicated t-test, level of significance…

A: The level of significance is α = 0.02.

Q: sample of 100 UK households have the following distributio Household size Frequency f;

A: We have to Find : Mean median mode  standard deviation  Given Following Data : House Hold size…

Q: The overhead reach distances of adult females are normally distributed with a mean of 195 cm and a…

A: Given,mean(μ)=195standard deviation(σ)=8sample size(n)=25

Q: A recent study focused on the number of times men and women send a Twitter message in a day. The…

A: Solution: Given information: n1= 25 Sample size of men n2= 30 Sample size of women x1= 23 Sample…

Q: The tread life of tires mounted on light-duty trucks follows the normal probability distribution…

A: