DAn experiment tested a tree fertilizer on a large number of elm and oak trees to see whether it promoted positive changes such as growth, less brownage, orincreased foliage. Below is a summary of the data collected in the experiment.a. What is the probability of seeing positive change?type your answer....type your answer....OakElmb. What is the probability of seeing positive change given that the tree is oak?choose your answer....Totalc. Do the data suggest effect and tree type are independent events?PreviousPositive Negative73451022717572Total118129247Submit

Given that Positive Negative Total Oak 73 45 118 Elm 102 27 129 Total 175 72 247

Answered: An experiment tested a tree fertilizer…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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1. Using the data provided, determine the null and alternative hypotheses. Then determine how many tails this research question has. 2. Using the data provided, use what you have learned to calculate all three measures of central tendency and all three measures of variability 3. Based on the data above, describe what type of analysis you plan to carry out and why you chose that type
This is a Statistics problem. Please explain each step thoroughly. The problem I'm having issues with is shown below:
C12. Based on the 2018 GSS, we compare church attendance (ATTEND) between lower- and upper-class respondents. ATTEND is an ordinal measure: 0 = never, 1 = less than %3D %3D once a year, 2 = once a year, 3 = several times a year, 4 = once a month, 5 = 2-3 times a month, and 6 = nearly every week. A lower score indicates lower church attendance. %3D %3D Group Statistics Subjective class identification Std. Deviation Std. Error Mean Mean How often R attends religious services LOWER CLASS 137 2.99 2.949 .252 UPPER CLASS 53 3.51 2.946 .405 Independent Samples Test Levene's Test for Equality of Variances Sig. (2- tailed) Sig. df How often R attends religious services Equal variances assumed .161 .689 -1.083 188 .280 Equal variances not assumed -1.084 94.704 .281
A study was conducted by a certain firm to determine who curses at their computer. The results indicated that 70% of people age 18-34 years have cursed at their computer. What are the odds against a randomly selected 18- to 34-year old having cursed at his or her computer. LOADING... Click the icon to view an explanation of odds. The odds, in the most simplified form, are nothing to nothing against a randomly selected 18- to 34-year old having cursed at his or her computer. (Type whole numbers.)
Use the following results from a test for marijuana use. Among 153 subjects with positive test results, there are 23 false positive results. Among 129 negative test results, there are 3 false negative results. a. How many subjects are included in the study? b. How many of the subjects had a true negative result? c. What is the probability that a randomly selected test subject had a true negative result?
Scenario: What influences the likelihood of whether a person will assist a stranger? In this study, participants were shown four conditions and asked to provide the percent likelihood that they would be willing to help in each condition. The researcher wanted to see if likelihood of helping varies based on the number of bystanders (0 or 10), and/or the gender of the stranger (male or female). Each participant participated in all four conditions (0 bystanders with a female; 0 bystanders with a male; 10 bystanders with a female; 10 bystanders with a male). Question: As taught in 510/515, what is the most appropriate graph if the only significant finding in this scenario is the main effect of number of bystanders? Group of answer choices Histogram Scatterplot Bar graph Box plot Line graph
Suppose a random sample of 1156 adults from your town are surveyed. The table below shows the results of the survey. Observed Frequencies Job Types the Sample Observed Frequency Outcome Blue Collar 277 White Collar 381 Pink Collar 417 Unemployed 81 The job type distribution for the entire state are summarized in second column of the table below. Fill in the expected frequencies. Frequencies of Job Types in the State Expected Percent Outcome Expected Frequency Blue Collar 23 White Collar 27 Pink Collar 43 Unemployed 7.
The Mars candy company states that 20% of all milk chocolate M&Ms are blue. In a sample of 80 M&Ms, what is the probability that more than 23% of them will be blue? Use the sampling distribution for a sample proportion and round to the nearest whole percentage. 25% 33% 75% 67%
The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to 12). One question asked was “What do you think are the chances you will be married in the next 10 years?” Here is a two-way table of the responses by gender: Opinion Female Male Almost no chance 103 94 Some chance but probably not 146 175 A 50-50 chance 428 522 A good chance 738 691 Almost certain 1170 776 How many individuals are described in this table? How many females were among the respondents? The percent of females among the respondents was about %. Your percent from the previous exercise is part of the marginal distribution of sex. the conditional distribution of sex among adolescents with a given opinion. the marginal distribution of opinion about marriage. What percent of females thought that they were almost certain to be married in the next 10 years?% Your percent from the previous exercise is part of the conditional distribution of sex among…
The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to 12). One question asked was “What do you think are the chances you will be married in the next 10 years?” Here is a two-way table of the responses by gender: Opinion Female Male Almost no chance 120 93 Some chance but probably not 149 167 A 50-50 chance 462 511 A good chance 746 704 Almost certain 1192 758 How many individuals are described in this table? How many females were among the respondents? The percent of females among the respondents was about %. Your percent from the previous exercise is part of the marginal distribution of opinion about marriage. the conditional distribution of sex among adolescents with a given opinion. the marginal distribution of sex. What percent of females thought that they were almost certain to be married in the next 10 years?% Your percent from the previous exercise is part of the conditional distribution of opinion…
In a study examining the relation of math ability to the belief that math ability was innate, the belief was considered the predictor variable. The researcher hopes to find a correlation between the participants’ math ability and their belief that math ability is innate. The scores for the three participants are shown below. The group that believed that math is NOT innate scored 66, 70, 50. The group that believed that math IS innate scored 7, 4,10. what are the mean and SD for each group?
A researcher conducted a study on 241 participants to see which plant color they were most likely to select. Using the chart below, what is the probability that someone would choose a plant that wasn't green or red? Plant Color Green Pink Red 50 Frequency 20.74% 100 Purple 20 71

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