Find the z-score for which 89% of the distribution's area lies between -z and z. -1.5982, 1.5982 -2.7653, 2.7653 -2.8438, 2.8438 -1.3459, 1.3459
Q: 75th percentiles of the data set, 8, 3, 9, 10, 12,17, 15 is ___ 8 15 3 17
A: Arranging Observations in the ascending order, We get :3,8,9,10,12,15,17 Here n = 7
Q: One sample of scores has a mean of M = 45 and a sample size of n = 10 scores. A second sample of…
A:
Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…
A: For country C n=1024,p hat =0.45 For country D n =1078 ,p hat = 0.41
Q: q2-- find the mean for the given data. x: 1,1,1,1,1,2,2,2,2,3,3,3,4,5,5,5,6,6,6,6,7,7,7,7,7
A: We know that Mean = sum of all observations/total number of observations
Q: 1. The following data, recorded in days, represents the recovery time „for patients who are randomly…
A: Given data: n1=13, x1=20, σ12=1, σ1=1n2=16, x2=15, σ22=1.8, σ2=1.34 Confidence level = 99% The…
Q: Q1: The following numbers represent the students' scores in the statistics exam: It is required to…
A: Ascending the given data and evaluate the frequency,
Q: se technology to calculate the P-value P-value = (Round to three decimal places as needed.)
A: Given that Sample size n1=1120 , n2=1048 Sample proportion p1^=0.47 , p2^=0.46
Q: Cancer occurs once in every 7409 patients . In the past year,1832 people out of 1,000,000 patients…
A: Given Data: x=1832 n=1000000 Using Binomial to normal approximation X~ Normal (1832, 1832×0.998)…
Q: How do you tell percentiles in a table
A: Percentile is a score that tells the value below which a given percentage of values falls in a table…
Q: fly will lay 402 éggs into rotting fruit. A biologist wants to see if the average will change for…
A: Given sample data is: 406, 432, 401, 410, 410, 406, 419, 412, 388, 409, 427, 405, 391, 389. Sample…
Q: The heights of women aged 20 to 29 follow approximately the (64, 2.7) distribution. Men of the same…
A:
Q: find p (1.2<z<1.75) refer to the table of z-scores
A: We have to find p (1.2<z<1.75) of z-score
Q: employees in a company was k2,400,000. The mean yearly salaries paid to male and female employees…
A:
Q: The mean age is years old. The median age is years old. The mode age is years old. The ages are
A: From this stem leaf plot, we can say that, Data set of ages in years is x = { 02, 05, 07, 07,…
Q: The pie chart shows the distribution of the opinions of parents on whether a college education is…
A: It is needed to test the claim whether the distribution of the opinions of teenagers is different…
Q: Find the z-score that has 93.82% of the distribution's area to its left.
A: given probability is P(Z<z0)=0.9382
Q: Find the z-score that separates the largest 5% of scores from the rest. Round your result to 3…
A: Obtain the z-score that separates the largest 5% of scores from the rest. The z-score that separates…
Q: figure to the nght, hich shows the percentages of adults from several countries who favor building…
A: The survey included the random sample 1125 adults from country A, 1003 adults from country B, 1019…
Q: The average child has 10 toys on their Christmas List. Is the mean different for Christmas Lists of…
A: a. Since sample size is small and population standard deviation is unknown, t-test is appropriate in…
Q: Find the variance of X X: 73,51,73,182,45,90,111
A:
Q: Suppose X∼N(−9,4) . Between what x values does 95.48% of the data lie? The range of x values…
A: Given; X~N(-9,4) meanμ = -9variance(σ2)=4 ⇒ standard deviation(σ)=2between what x value does 95.48%…
Q: find p (-1<z<1) refer to the table of z-scores
A: we have to find given probability...
Q: Using the 2* rule, determine the number of class intervals(k) for the frequency distribution…
A: Given
Q: For 60 randomly selected college students, exam score frequency distribution was obtained. Find the…
A: Given: n = 60 Formula Used: Coefficient of variation = SX×100% Where, S is sample standard deviation…
Q: Several factors influence the size of the F-ratio. For 1a and 1b, select the pair that best…
A: If we increase the difference between the sample means affects the numerator of the F−ratio. As the…
Q: dentify the claim and state Ho and H. The claim is "the proportion of adults in Country C who favor…
A: Given that Sample sizes for Country C and D n1=1024 , n2= 1078 Level of significance =alpha = 0.09
Q: 0,26,40,36,23,42,35,24,30,33 determine the value represents the 60th percentile
A: Provided data is: 20, 26, 40, 36, 23, 42, 35, 24, 30, 33. The observations P1, P2, …, P99 which…
Q: The stem-and-leaf plot illustrates the average number of text messages per hour sent by teenagers…
A: From stem and leaf plot the data are 2, 3, 4, 4, 5, 6, 8, 8, 9, 9, 9, 10, 10, 10, 11, 11, 11, 11,…
Q: How did you get the p-value?
A:
Q: Describe how to find approximate p-Values.
A:
Q: Find the value of X2 values that separate the middle 80 % from the rest of the distribution for 20…
A:
Q: Calculate the Percentile Rank for a student who becomes fourth (4th) in terms of the GPA categorized…
A: The formula for percentile rank of score is, Percentile rank of score=Number of values below…
Q: Find the percentile rank of a test score of 76 for the data set 70,73,68,83,78,80,89,88,65
A: Solution-: Given data: 70,73,68,83,78,80,89,88,65 We find percentile rank of a test score of 76=?
Q: Find the z-score that cuts off 40% in the tail on the left
A: Our aim is to find the find the z-score that cuts off 40% in the tail on the left
Q: identify the Cummulative Frequency Distribution Scores Number of Students 50-59…
A: Cumulative frequency: Cumulative frequencies are obtained by adding each frequency from a frequency…
Q: 6. Find the variance if X~N(0, ¿) and 95% of the data are between -7 and 7.
A:
Q: Find the z-score that has 1.7% of the distribution area to its left.
A: Given information: The area to the left side of the z-score is 1.7%. The z-score is a standard…
Q: Find the average of 1/2, 1/3 , and1/4
A:
Q: Find P₄₁ , which is the score separating the bottom 41% from the top 59%. P₄₁ =
A: It is given that the area is 0.41.
Q: O E Ho: P1 P2 D D. Ho: P1 2 P2 H: P <P2 H, P, SP2 H P, 2P2 ind the standardized test statistic. z=…
A: Given that Sample sizes n1=1120 , n2=1048 Sample proportion p1^ =0.47 , p2^=0.46
Q: find the value of x if the numbers 7, x, 3, 9, 2 have a mean of 5.8
A:
Q: The data table shows the ages in years of 10 men with systolic blood pressure. The Age,x: 18, 26,…
A:
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
- The pie chart shows the distribution of the opinions of parents on whether a college education is worth the expense. An economist claims that the distribution of the opinions of teenagers is different from the distribution for parents. To test this claim, you randomly select 197 teenagers and ask each whether a college education is worth the expense. Strongly agree The table to the right shows the results. At a = 0.05, test the economist's claim. Click the icon for the pie chart of the distribution. Response Somewhat agree Neither agree nor disagree Somewhat disagree Strongly disagree Survey results State Ho and H₂ and identify the claim. Ho: The distribution of the opinions of whether a college education is worth the expense is the same for teenagers and parents. Ha: The distribution of the opinions of whether a college education is worth the expense is different for teenagers and parents. Which hypothesis is the claim? Ho На Calculate the test statistic. 2 x = (Round to three decimal…The data table shows the ages in years of 10 men with systolic blood pressure. The Age,x: 18, 24, 39, 45, 49, 63, 71, 29, 57, 22 and systolic blood pressure, y: 109, 121, 142, 133, 199, 186, 199, 132, 177, 117. The sample correlation coefficient r is 0.913. Remove the data entry for the man who is 49 years old and has a systolic blood pressure of 199 millimeters of mercury from the data set and find the new correlation coefficient.how did you find the Z score?
- A survey recently went out to 15 university presidents across a certain country. The data represents the ages of the different presidents. Use a stem-and-leaf plot that has two rows for each stem to represent their ages. 53, 62, 57, 53, 58, 55, 61, 67, 57, 62, 50, 61, 59, 52, 74 O Stems Leaves Determine the leaves in the stem-and-leaf plot shown at the right. 5 (Use ascending order.) 6. 6. 7 Which of the following best summarizes what the stem-and-leaf plot tells you about the data? A. The plot shows that there is an equal amount of university presidents under the age of 60 as there is above the age of 60. B. The plot shows that most university presidents have ages that range from 65 to 75 years old. O C. The plot shows that the age of the university presidents cluster around age 60. O D. The plot shows that most university presidents have ages that range from 50 to 65 years old. ? Click to select your answer(s).Use the figure to the right, which shows the percentages of adults from several countries who favor building new nuclear power plants in their country. The survey included random samples of 1051 adults from Country A, 1120 adults from Country B, 1048 adults from Country C, and 1013 adults from Country D. At a =0.05, can you support the claim that the proportion of adults in Country B who favor building new nuclear power plants in their country is different from the proportion of adults from Country C who favor building new nuclear power plants in their country? Assume the random samples are independent. 100- 80- 60 40 20- 0- I Country A 53% I Country B 47% O Country C 46% O Country D 34% Identify the claim and state Ho and Ha. The claim is "the proportion of adults in Country B who favor building new nuclear power plants in their country is the same as the proportion of adults from Country C who favor building new nuclear power plants in their country." greater than less than different…Find the z-score that has 68.4% of the distribution's area to its right. Can you also give the steps in the calculator? TI-84
- A large automobile insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the preceding three-year period. Z-value p-value Single Policyholders n₁ = 440 Number making claims = 88 a. Use a = 0.05. Test to determine whether the claim rates differ between single and married male policyholders. (to 2 decimals) (to 4 decimals) X Married Policyholders n2 = 840 Number making claims 126 We can conclude ✔ that there is the difference between claim rates. b. Provide a 95% confidence interval (to 4 decimals) for the difference between the proportions for the two populations. Enter negative answer as negative number. X * )For the residents in 2014, use R to calculate the interval with 99% certainty that the interval contains the actual population mean of the residents by census tracts. Type in the interval with keyboard. We also know that in each year, the number of residents by census tract in the State of Maryland follows a normal distribution, and the variance in the number of residents within the State of Maryland is the same for different years. POP2014: 3072, 1989, 3794, 2689, 3211, 3722, 4385, 4009, 7598, 3862, 3097, 2726, 4881, 4157, 2570, 2512, 2518, 4863, 4147, 7139, 6067, 6819, 3705, 3239, 3824, 4977, 2576, 2940, 9791, 5231, 5634, 5337, 4205, 3888, 5562, 3335, 3770, 1808, 2045, 1532, 5420, 4993, 6109, 4377, 5424, 4976, 4507, 3738, 2827, 3485, 1559, 5199, 4702, 3971, 3803, 3356, 4670, 3816, 5477, 4760, 3126, 3630, 3755, 3795, 2578, 3382, 4005, 2442, 6096, 3799, 3843, 3836, 6046, 6431, 3561, 3142, 4829, 5058, 2471, 6119, 3523, 3094, 3146, 3356, 2618, 2366, 4266, 4016, 6080, 1554, 6878, 3645,…The IQR represents the spread of the middle 50% of the data. Do you think the IQR in this problem is large or small? Here is the data. 0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 6, 7, 13, 14 Median is 3. Min # is 0 Max # is 14 Q1 is 2 Q2 is 3 Q3 is 4 IQR=Q3 (4)-Q1(2) IQR=2
- A food quality inspector records the freezer temperature of a random sample offreezers from 11 supermarkets and record the temperatures (in degrees Celsius) as follows−12, −16, 0, −4, 5, − 9, − 9, − 7, − 5, 3, − 10Evaluate the interquartile range for this data.Which z-score has the higher frequency? (a) z = +1.0 or z = +2.3; (b) z = −2.8 or z = −1.7; (c) z = −.70 or z = −.20; (d) z = 0.0 or z = −2.0.How would I identify the p-value?
