A national park is famous for its beautiful desert landscape and its many natural rock formations. The following table is based on information gathered by a park ranger of all rock formations of at least 3 feet. The height of the rock formation is rounded to the nearest foot. Height of rock formation, feet 3-9 10-29 30-49 50-74 75 and higher Number of rock formations in park 112 100 31 21 19 For a rock formation chosen at random from this park, use the preceding information to estimate the probability that the height of the rock formation is as follows. (Round your answers to two decimal places.) (a) 3 to 9 feet (b) 30 feet or taller (c) 3 to 49 feet (d) 10 to 74 feet (e) 75 feet or taller

Q: Find the standard deviation of this number set: {2, 4, 9} showing all of the steps involved as shown…

A:

Q: Fill in the missing value so that the following table represents a probability distribution. x…

A: Missing value=0.4

Q: A group of people were asked whether they owned a dog. The number of people that owned a dog was…

A: From the provided information, Sample size (n) = 490 + 464 = 954 The number of people that owned a…

Q: If the grades are normally distributed and 8 students received a B, how many students took the…

A: Let C denote the grades of students. Given that X follows N(mean = 82, SD = 5), then  Z = (X -…

Q: A point is chosen at random in the square shown below. Find the probability that the point is in the…

A: Given that, a dart hits the small square target shown below at a random point. Each side of the…

Q: Show formula please and how to do it on a TI-84 calculator. Thank you.    Giving a test to a group…

A: Given A test to a group of students, the grades and gender    A B C Total male  3 18 7 28…

Q: is also called as the Median. O a. Second quartile O b. First quartile O C. Lower quartile O d.…

A: We have given that  Median is middle value of the data and it is covered 50% of the data

Q: An assessment consists of a true/false question followed by a true/false question. If both questions…

A: Given that an assessment consists of a true/false question followed by a true/false question.

Q: Suppose you roll a special 22-sided die. What is the probability that the number rolled is a "1" OR…

A: Given that  Roll a 22-sided die  Sample space=S…

Q: Use the blood Alcohol Concentration chart to determine the likelihood a 140 pound (lbs) female will…

A: Solution: Given data, R = 6e (12.77x)

Q: A single six-sided die is rolled. Find the probability of rolling a 3 , 5, or 6 Round your answer to…

A: Given data: A single six-sided die is rolled. To find: Find the probability of rolling a 3 , 5, or…

Q: 4. A car salesperson notes that she sells either 1, 2, 3, 4, 5 or 6 cars per week with equal…

A:

Q: The type and number of fish caught in the Charleston Harbor in March was recorded for a month. The…

A: From the provided information, The number of fish caught in March: Flounder Red Drum Black…

Q: efer to the data set of body temperatures in degrees Fahrenheit given in the accompanying table and…

A: Obtain the value of mean.   The value of mean is obtained below as follows:   Use EXCEL Procedure…

Q: The probability, rounded to the nearest percent, that a point chosen randomly inside the rectangle…

A: This is a problem of geometric probability or probability in continuum. We cannot use classical…

Q: A research firm claims that the distribution of the days of the week that people are most likely to…

A: The question is about categorical data analysis.Given :

Q: A standard die is rolled. Find the probability that the number rolled is greater than 55. Express…

A: Note: Thank you for the question. Since the die comes up values 1 through 6, the probability is…

Q: On a nationwide math test, the mean was 52 and the standard deviation was 4. If Roberto scored 85,…

A: The z score formula is,

Q: A single card is drawn from a deck. Find the probability of selecting a jack or a king. Note: Only…

A:

Q: What is the probability of randomly selecting a New service? New service Old service Totals Student…

A: Given that    New service Old service Total Students  12 22 34 Professor  17 10 27 Total 29…

Q: Use the appropriate table to solve this problem: At an online computer store 60% of computers sold…

A: Given that at an online computer store 60% of computers sold are laptops.

Q: A sports statistician recorded the speed of every serve made by a certain tennis player at the U.S.…

A: It is given that the mean serve speed in the tournament is 98 miles.The distribution of the serve…

Q: A student takes a multiple-choice test that has 6 questions. Each question has four choices. student…

A: It is given that,  A student takes a multiple-choice test that has 6 questions i.e. n=6 Each…

Q: A marketing company has randomly surveyed 194 men who watch professional sports. The men were…

A:

Q: If you wanted to estimate the probability that a household in Winona has a Roku hooked up to at…

A: Firstly we need the data of total number of devices in the household that roku can be hooked up to.…

Q: What is the probability of randomly selecting someone who is Professor and has a New service?

A: It ia given that Total = 66 Number of individuals who are Professor and has a new service = 20

Q: What is the probability of randomly selecting a adult?

A: It ia given that Total = 105 Number of adults = 53

Q: What is the probability of randomly selecting a Male or a Cat?

A: It is given that Total = 83 Number of males = 38 Number of cat = 32 Number of cat and males = 15

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard…

A:

Q: How long is the median relating to the 10 cm side in a triangle with sides of 6, 7 and 10 cm?

A: The Median is approximately 5.91

Q: The distances golf balls travel under laboratory testing conditions are normally distributed. The…

A:

Q: A certain disease has an incidence rate of 0.4%. If the false negative rate is 4% and the false…

A: Given A certain disease has an incidence rate of 0.4%. If the false negative rate is 4% and the…

Q: Find the probability of that he or she owns a credit card given that the student is a freshman.…

A:

Q: (d) Tomorrow, the same local weather report will be given. Estimate the probability that it will be…

A: The tables shows the results of 365 consecutive days and compares whether it rained or not to…

Q: In a pizza restaurant, 57.54% of the customers order pizza. The probability that a customer who…

A: From the provided information, In a pizza restaurant, 57.54% of the customers order pizza. P (pizza)…

Q: An earth-conscious clothing store offers a 15% discount if you bring in a bag full of old clothing…

A: From the given information, n=20 and p=0.69.

Q: please answer in text form and in proper format answer with must explanation , calculation for each…

A: To calculate the probability that a person who tests positive actually has the disease, we use…