6. Use R: Suppose the yearly income of people in Minnesota is normally distributed with mean 45700 and standard deviation 2830. Find the probability that a randomly selected person (X) has an income between 44000 and 48000.

Q: After the premiere of the new comedy Bumblebee, moviegoers were asked in a quick poll whether they…

A: 100 adults : (29 liked movie) 20 teenagers : ( 8 liked movie)

Q: The two box and whisker plots shown below illustrate the distribution of the scores for two classes…

A: The given two box and whisker plots indicate the distribution of the scores for two classes on a…

Q: Fish weights: A fish hatchery raises trout to stock streams and lakes. The weights, in ounces, of a…

A: The data shows the weights of a sample of 18 trout at their time of release.

Q: A survey found that women's heights are normally distributed with mean 62.5 in. and standard…

A: c. The mean for men's height is 67.7, and standard deviation is 3.7.

Q: Would observations or interviews be more appropriate to research the following topic? People's…

A: Topic :  People's behaviour at dog parks . Observational study is beneficial if we have not a fix…

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: given data standard normal distributionZ~N(0,1)we have to find P(Z>-1.55) = ?

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

A: Required Area is P(Z>-1.18)

Q: A jar contains 12 coins: 6 pennies, 2 nickels and 4 dimes. A child selects 2 coins at random without…

A: Jar : 12 coins  6 pennies 2 nickels 4 dimes  Probability= favorable/total

Q: 5.28 Variable life insurance return rates. Refer to the International Journal of Statistical…

A: Solution: Given information: n= 100 Sample size  μ= 1.5 Population meanσ=0.2 Population standard…

Q: A survey found that women's heights are normally distributed with mean 63.3 in. and standard…

A: Solution: Let X be the men's height are normally distributed with mean 68.4 in and standard…

Q: A multiple choice test has 10 questions each of which has 4 possible answers, only one of which is…

A:

Q: This question confuses me. Kindly help explain with details please. I want to understand how the…

A: a) From the given graph, The function is, fx=x29 From the X-axis, the range for X is 0 to 3. Let us…

Q: 1. Suppose that a random variable X has a continuous uniform distribution 1 f(x) = {2' 4≤x≤6 0,…

A:

Q: Suppose we have the following returns for large-company stocks and Treasury bills over a six-year…

A:

Q: Software output is not required for this assignment. (Problems 1-2) Taxes and Soda Consumption -…

A: We need to write the Hypothesis for the given data as follows.

Q: You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of…

A: GIVEN DATA x=80,s=4.290% ci for μE=0.7n=?

Q: Approximate the mean of the grouped data. Phone calls (per day) Frequency 8-11 17 12-15 29 16-19 16…

A: The given frequency distribution table is,

Q: A golf ball is selected at random from a golf bag. If the golf bag contains two black balls, six…

A: 2 black 6 orange 14 red _____________ 22 total

Q: You are called on to decide how your company should produce its new cell phone screen defroster (for…

A:

Q: We want to conduct a hypothesis test of the claim that the population mean number of holding penal…

A: Given that  Sample mean=2.5 Sample standard deviation =0.8

Q: Suppose that a random variable X has a continuous uniform distribution  - Find the distribution of…

A:

Q: An amusement park studied methods for decreasing the waiting time (minutes) for rides by loading and…

A:

Q: Identify whether the variable is continuous or discrete: Occupation.

A: A quantitative variable which can take any value from the real numbers is a continuous variable.…

Q: 7. Suppose you have a bin of Tennis Balls, 60 are Penn brand and 40 are Wilson brand. You want to…

A:

Q: Which type of trader is said to pay for risk mitigation? O Speculator O hedger O arbitrageur

A:

Q: A trucking company determined that the distance traveled per truck per year is normally distributed,…

A: In question, Let X be the random variable and given that X follows normal distribution with mean 70…

Q: Use a 0.05 to test for any significant differences. State the null and alternative hypotheses. O Ho:…

A:

Q: In 2018, a consumer goods giant had more than 20 brands with more than $1 billion in annual sales.…

A: Given data:

Q: Will all earthquakes above the 95th percentile cause indoor items to shake? O A. Yes, because…

A: The mean is 1.157 and the standard deviation is 0.532.

Q: Provide an appropriate response. For the stem-and-leaf plot below, what is the maximum and what is…

A: HERE KEY TO INTERPRETE STEM LEAF PLOT IS:  11|7 MEANS 11.7 WE HAVE TO FIND MINIMUM AND MAXIMUM

Q: The mean was given to be  ? = 11  and  x0 was determined to be 11. Substitute these values into the…

A:

Q: Use the given frequency distribution to find the (a) class width. (b) class midpoints of the first…

A: given data  class and other frequencies are given  according to data we have  we have to find out…

Q: ed. When set properly, the machine produces nails having a mean length of 2.000 cms, with a standard…

A: Given that  The machine produces nails having a mean length of 2.000 cms, with a standard deviation…

Q: Part: 1 / 5 Part 2 of 5 (b) Find the probability that the student is in fourth grade. The…

A: It is given that the probability distribution of X in a solution. Also in part(a).

Q: Find the area under the standard normal curve to the left of the following z -values. Round your…

A: we have to find the area under the standard normal curve to the left of the following z -values.…

Q: Assuming Employee (X) and Output (Y) for Robinson Malls. Some data are given as: Some data are given…

A: Given data is x y 1 6 2 8 2 7 3 9 4 8

Q: A company has a policy that states: Our employees will be paid at the mean of their peers. After a…

A: Given that one employee group is being paid at the 25th percentile and an immediate raise of 7.7% is…

Q: What is the point of the ‘Exploration’ phase? What is the difference between  ‘Exploration’ and the…

A: Exploratory research helps you to gain more understanding of a topic.  It helps to gather…

Q: Funding for many schools comes from taxes based on assessed values of local properties. People's…

A:

Q: Distribution of Major Hurricanes 423 LOK 0 P(Y=y) 0.182 0.299 0.244 0.082 0.033 Print y 5 6 7 8…

A: Data is given for  y and corresponding probability We have to calculate mean and standard deviation.…

Q: A summer intern at the Lego factory in Billund, Denmark, samples 41 yellow bricks and 35 red bricks…

A:

Q: In the United States, the mean birth weight for boys is 3.41 kg, with a standard deviation of 0.55…

A: given data normal distributionμ = 3.41σ  = 0.55P(x>4.30) = ?

Q: A national survey found that 41% of adults ages 25-29 had only a cell phone and no landline. Suppose…

A: Given information: A national survey found that 41% of adults ages 25-29 had only a cell phone and…

Q: Find the value of the test statistic for class. (Round your answer to two decimal places.) Find the…

A:

Q: Classify the events as dependent or independent. Events A and B where P(A) = 0.7, P(B) = 0.7, and…

A: Given information: P(A)=0.7 P(B)=0.7 P(A and B)=0.49 Condition for independence: If P(A and…

Q: EEEE Given the least-squares regression line, In(Element) = 2.305 -0.101(Time), what is the…

A: It is given that the least-square regression line is ln(Element) = 2.305 - 0.101(Time)

Q: X1 300 1 X2 360 X3 480 X4 4- Mean deviation 5 - Standard deviation 6- Half-spring run 7 -range 8-…

A:

Q: In a cumulative polygon (curve), frequencies are plotted against A.) midpoint B.)upper class…

A: Introduction A cumulative frequency (cf) polygon (curve) represents cf distribution of the grouped…

Q: In a random sample of 37 ipads brought in for repairs, the average repair cost was $50 with the…

A: Given information: Sample size, n=37 The average repair cost is x¯=50. Standard deviation, s=16 In…

Q: If a college student is randomly selected, what is the probability that the student's favorite movie…

A: It is given that  Total students = 1100 No. of student’s favourite movie is rated PG13  = 300