Q3 // In a detailed study of the productivity of a laboratory, the age distribution of its workers was analyzed, and the results were as follows, so the kurtosis coefficient is equal? (15 degrees) class 10-19 20-29 30-39 40-49 20 48 51 30 fi
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A: it can be solved as
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A: Standard error of estimate is given by, => √summation(Xi- X bar)2/ (n-1) Where n is sample size
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A: Solution: Given information: n= 12 ∑xi= 20∑yi= 45∑xiyi=32∑xi2= 135∑yi2= 1025
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A:
Q: Suppose that a researcher, using wage data on 250 randomly selected male workers and 280 female…
A: Given data Suppose that a researcher, using wage data on 250 randomly selected male workers and 280…
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A: As per our guidelines I can solve only first question. Post the remaining questions again and…
Q: 5.1 Byers and Williams (Viscosities of Binary and Ternary Mixtures of Polyaromatic Hydrocarbons,"…
A: Given Information: Consider the given data: Temperature Viscosity 24.9 1.133 35 0.9772 44.9…
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A: Hello! As you have posted more than 3 sub parts, we are answering the first 3 sub-parts. In case…
Q: Exercise 4.1 The number of defects on the front side (X) of a wooden panel and the number of defects…
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A: Given Information: Low Medium High 42 35 28 41 42 30 40 34 32 40 38 35 29 42 46
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Q: Suppose that a random sample of 200 twenty-year-old men is selected from a population and that these…
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A: Given N=12
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Q: Exercise 4.1 The number of defects on the front side (X) of a wooden panel and the number of defects…
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Q: In a series of tests (see data table below), 15 rolls of wrap are made under carefully controlled…
A: Solution: X (X-X) (X-X)2 134 2.066667 4.271111 131 -0.93333 0.871111 129 -2.93333 8.604444…
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- You sample 1500 dung beetles in a population for 2 alleles A1 and A2 and get the following data: A1A1 825 individuals A1A2 525 individuals A2A2 135 Individuals Is this population in Hardy Weinberg Euilibrium, use a chi square test to determine?A 14.2 Test Homogeneity and Indpi x b The data summarized in the acco X G screenshot screen on windows - A webassign.net/web/Student/Assignment-Responses/last?dep=25472461 The data in the accompanying table are from a paper. Suppose that each person in a random sample of 47 male students and in a random sample of 89 female students at a particular college was classified according to gender and whether they usually or rarely eat three meals a day. Usually Eat 3 Meals a Day Rarely Eat 3 Meals a Day Male 25 22 Female 37 52 (a) Is there evidence that the proportions who would fall into each of the two response categories are not the same for males and females? Use the X statistic to test the relevant hypotheses with a significance level of a = 0.05. State the appropriate null and alternative hypotheses. O Ho: The proportions falling into the two response categories are the same for males and females. H3: The proportions falling into the two response categories are not the same for males…How is the hatching of water python eggs influenced by the temperature of the snake's nest? Researchers randomly assigned newly laid eggs to one of three water temperatures: hot, neutral, or cold. Hot duplicates the extra warmth provided by the mother python, and cold duplicates the absence of the mother. The table shows the result of the experiment. The researchers will use a chi-square test for homogeneity to analyze the findings. Hatching status Yes No Total Cold 16 11 27 Water Temperature Neutral 38 18 56 Hot Total 75 129 29 58 104 187 Which of the following is false? All of the conditions are met for conducting a chi- square test for homogeneity. The data came from 3 groups in a randomized experiment. All expected counts are at least 5. The 10% condition is met. The 10% condition is not needed because the eggs were not randomly selected from the population.
- How is the hatching of water python eggs influenced by the temperature of the snake's nest? Researchers randomly assigned newly laid eggs to one of three water temperatures: hot, neutral, or cold. Hot duplicates the extra warmth provided by the mother python, and cold duplicates the absence of the mother. The table shows the result of the experiment. The researchers will use a chi-square test for homogeneity to analyze the findings. Hatching status Yes No Total Cold 16 11 27 Water Temperature Neutral Hot 38 75 18 56 104 Total 129 58 187 Which of the following is false? All of the conditions are met for conducting a chi- square test for homogeneity. The data came from 3 groups in a randomized experiment. All expected counts are at least 5. The 10% condition is met. The 10% condition is not needed because the eggs were not randomly selected from the population. IncorrectA study of bone density on 55 random women at a hospital produced the following results. Age 3737 4141 5353 6969 7373 Bone Density 345345 335335 330330 315315 310310 Copy Data Step 3 of 3 : Calculate the coefficient of determination, r2r2. Round your answer to three decimal places.We are interested in comparing the proportions of men and women who say earning a large salary is very important to them. You surveyed 200 men and 200 women and recorded their answers to the question as “yes” (earning a large salary is very important) or “no” (earning a large salary is not very important). Yes No Total Men 150 50 200 Women 110 90 200 Total 260 140 400 Test the association between sex and the importance of earning a large salary using a chi-square test. Provide the null and alternative hypotheses, expected counts, test statistic, degrees of freedom, and p-value. What do you conclude ( σ= 0.01)?
- We are interested in comparing the proportions of men and women who say earning a large salary is very important to them. You surveyed 200 men and 200 women and recorded their answers to the question as “yes” (earning a large salary is very important) or “no” (earning a large salary is not very important). Yes No Total Men 150 50 200 Women 110 90 200 Total 260 140 400 Test the association between sex and the importance of earning a large salary using a chi-square test. Provide the null and alternative hypotheses, expected counts, test statistic, degrees of freedom, and p-value. What do you conclude ()?The marital status of residents of four apartment complexes is reported here. Compute the index of qualitative variation (IQV) for each neighborhood. Which is the most heterogeneous of the four? Which is the least? Complex A Marital Status Frequency Single 26 Married 31 Divorced 12 Widowed 5 N= 74 Complex B Marital Status Frequency Single 10 Married 12 Divorced 8 Widowed 7 N=37 Complex C Marital Status Frequency Single 20 Married 30 Divorced 2 Widowed 1 N= 53 Complex D Marital Status Frequency Single 52 Married 3 Divorced 20 Widowed 10 N=854. The article "Gender Differences in Individuals with Comorbid Alcohol Dependence and Post-Traumatic Stress Disorder" (Amer. J. Addiction, 2003: 412–423) reported the accompanying data on the Obsessive-Compulsive Drinking Scale (OCSD) score. Gender Male Female Size 44 40 Sample Mean 19.93 16.26 SD 7.74 7.58 (a) Based on the above data, construct a 95% confidence interval for the mean OCSD score for males.
- A study of bone density on 5 random women at a hospital produced the following results. Age 41 45 49 69 73Bone Density 360 350 345 335 330 Step 3 of 3: Calculate the coefficient of determination, r2. Round your answer to three decimal places.Every year, the students at a school are given a musical aptitude test that rates them from 0 (no musical aptitude) to 5 (high musical aptitude). This year's results were: Aptitude Score Frequency1 32 33 94 8 5 5 6 2 The mean (¯xx¯) aptitude score: (Please show your answer to 1 decimal place.) The median aptitude score: The mode aptitude score: (Please separate your answers by ',' in bimodal situation. Enter DNE if there is no mode.)A random sample of 150 individuals (males and females) was surveyed, and the individuals were asked to indicate their year incomes. The results of the survey are shown below. Income Category Category 1: $20,000 up to $40,000 Category 2: $40,000 up to $60,000 Category 3: $60,000 up to $80,000 Edit Format Table Test at a = .05 to determine if the yearly income is independent of the gender. (CSLO 1,6,7) 12pt Male 10 35 15 V Paragraph BI U A Female 30 15 45 > 2 T² :
