Part a: find the standard deviation and round answer to at least one decimal place part b: find the range rule of thumb and round the answer to one decimal place

Q: The distribution of the lengths of a commercially caught fish is bell-shaped with mean 24 cm and…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: You throw a ball as far as you can 5 times, recording the distance for each throw: 165 feet, 184…

A: since only 5 observation is given we will consider them as sample (n = 5)and population (N = 100)…

Q: Suppose a geyser has a mean time between eruptions of 92 minutes. If the interval of time between…

A: From the given information,

Q: The coefficient of variation CV describes the standard deviation as a percent of the mean. Because…

A: Given Data :  Below table will be used to calculate the mean and standard deviation   Height…

Q: The ages (in years) of a random sample of shoppers at a gaming store are shown. Determine the range,…

A: Given data:- 12,17,23,14,13,18,21,16,14,19Range=maximum-minimum=23-12=11Mean =…

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: In a population of ages where the mean age is 45 and the standard deviation is 5.25, what are the…

A: Given mean age = 45Standard deviation = 5.25The Z score with 0.0505 to its left is -1.64 and the Z…

Q: ind the standard deviation (rounded to the nearest unit) for the data indicated. Test Score…

A:

Q: Calculate the sample standard deviation for this data set: 65, 48, 70. The formula for the sample…

A:

Q: What percent of people would you expect to complete the form in less than 4.225 hours? % What…

A: Let X be the number of hours to complete a 1040 tax form which follows normal distribution with mean…

Q: In my homework assignment, I have a concern about standard deviation do I have to round it to two…

A: Rounding-off must always be done as per the instruction in the  question. In the absence of an…

Q: Joey and Dee Dee bowled five games at the Rock 'n' Bowl Lanes. Their scores are given in the…

A:

Q: The Transport Network Vehicle Service (TNVS) drivers have an average booking of 22 rides a day with…

A: Here we have given the information, using this information we have to find the standard error of the…

Q: Below represents the amounts that a random sample of employees reported that they spent on dinner…

A:

Q: The coefficient of variation CV describes the standard deviation as a percent of the mean. Because…

A: For Heights and Weights, Heights Weights   76 181   71 198   66 165   80 214   73 229…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days…

A: Let us assume that X denotes the length of pregnancies in the rural areas.It is given that X follows…

Q: Laura learned that the average GPA in her school is 3.6 with a standard deviation of 0.3. If her GPA…

A: From the given information,   Mean = 3.6 Standard deviation = 0.3   The objective is to find the…

Q: The tourist bureau of Cancún surveyed a sample of 5 United States tourists as they left to return…

A: We have given that,  The sample numbers are :- 12, 8, 10, 7, 8 Then,  We will find the standard…

Q: The average and standard deviation for ACT scores are 20 and 3 respectively. average and standard…

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Q: a. Which player had the higher average points when compared to the other players on his team?

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Q: Scores on the verbal Graduate Record Exam​ (GRE) have a mean of 448 and a standard deviation of 113.…

A:

Q: Test Score Frequency 90 80 4 70 60 6 50 3

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Q: Use the table to answer each question. Note: Round z-scores to the nearest hundredth and then find…

A:

Q: On a nationwide math test, the mean was 72 and the standard deviation was 7. If Roberto scored 90,…

A: Given that, Mean = 72 Standard deviation = 7

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days…

A: From the provided information, Mean (µ) = 260 days Standard deviation (σ) = 16 days X~N (260, 16)

Q: Explain what the following terms / tests are used to calculate. Write the formula that calculates…

A: STANDARD DEVIATION: The standard deviation is a term that belongs to descriptive measure of…

Q: A statistics professor surveys all 100 of the students in an introductory statistics lecture. The…

A: In this context, it that the professor conducts the survey on all 100 students in an introductory…

Q: Colin checked the hit counters of 5 websites to track how many people visited them yesterday. He…

A: Measure of central tendency measures the central or average value of a dataset. Measures of…

Q: The following dala gives the Keighte (X) n incles and Weight (y) in kiloyrams of Seven Stadeute 60…

A: Since multiple parts given, first part is answered step by step.   Following table is obtained from…

Q: What percent of people would you expect to complete the form in less than 2.9 hours? What percent of…

A: Let X be the number of hours to complete a 1040 tax form which follows normal distribution with mean…

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

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Q: A student studying statistics wants to look at data for his favorite sport, American football. He…

A: It is given that that a student collect data on the lengths of 100 field goals from various games…

Q: Baby weights: The weight of male babies less than 2 months old in the United States Is normally…

A:

Q: You want to know the percentage of utility companies that earned revenue greater than 94 million…

A: Given Mean(μ)=60standard deviation(σ)=15

Q: Fill in the following values in the table using the rounded mean you got in the question above.…

A: From the given information, x 57 61 57 57 58 57 X¯=57.8333 Consider, x…

Q: What proportion of the population score above an 18 on the ACT? What proportion of students score…

A: Given: Let X denote the SAT score thus, X~ N(500, 1002) Let Y denote the ACT score thus, Y~ N(20,…

Q: Find the standard deviation (rounded to the nearest unit) for the data indicated. Test Score…

A: Given Information:

Q: Find the standard deviation (rounded to the nearest unit) for the data indicated.   Test Score…

A: Solution: x(1) Frequency (f)(2) f⋅x(3)=(2)×(1) f⋅x2=(f⋅x)×(x)(4)=(3)×(1) 50 3 150 7500 60 6…

Q: Find the standard deviation of the following numbers (Round your answer to 4 decimal places.):  1,…

A: 1, 4, 4, 7, 7, 7, 11, 11, 14, 16, 16

Q: In the 1992 presidential election, Alaska's 40 election districts averaged 1939 votes per district…

A: Given, In the 1992 presidential election, Alaska's 40 election districts averaged 1939 votes per…

Q: During one year, there were 10 hurricanes recorded. Their maximum wind speeds, in miles per hour…

A: Given: N=10