If f.(a,b) = f,(a, b) = 0 then (a, b) is %3D %3D ans. critical point point of extreme isolated point saddle point
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- A research center claims that 26% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of 1000 adults in that country, 29% say that they would travel into space on a commercial flight if they could afford it. At α=0.05, is there enough evidence to reject the research center's claim? Complete parts (a) through (d) below. (a) Identify the claim and state H0 and Ha. "Recall that the claim is the percentage of adults in the country would travel into space on a commercial flight if they could afford it. Let a success be an adult in the country who would travel into space on a commercial flight if they could afford it. Translate the claim made about the population parameter from a verbal statement to a mathematical statement." (b) Use technology to find the P-value. (c) Decide whether to reject or fail to reject the null hypothesis and (d) interpret the decision in the context of the original claim.When you open a bag of M&M's you expect to see 30% brown, 20% yellow, 20% red, 10% orange, 10% green and 10% blue. You look in your bag of 150 M&M;s and find the following results. Is there evidence to say your bag has differing results at α=.05α=.05? Brown 49 Yellow 40 Red 40 Orange 10 Green 5 Blue 6 The Pvalue is P = . (4decimals) There is to say the results vary.A medical researcher says that less than 77% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 400 adults in that country, 73% think that healthy children should be required to be vaccinated. At α=0.05, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below.
- A medical researcher says that less than 79% of adults in a certain country think that healthy children should be required to be vaccinated. In a random sample of 300 adults in that country, 75% think that healthy children should be required to be vaccinated. At α=0.01, is there enough evidence to support the researcher's claim? Complete parts (a) through (e) below.A researcher collects data that represents the average number of hours of sleep in the last two nights by 8 depressed patients and 9 non-depressed patients. The researcher is interested in whether the two groups reliably differ in the amount of sleep they get. Use Jamovi to calculate t-obt and the p value.Suppose a researcher uses 36 pairs of identical twins (i.e., dependent data) to compare two treatments. For each set of twins, one twin is randomly assigned to Treatment 1 and his/her twin is assigned to Treatment 2. In evaluating the calculated t value, how many degrees of freedom (df) does the researcher have?A. 36B. 72C. 35D. 37
- D. Which video streaming platform(s) has(have) the highest median time spent by its patrons? E. Which video streaming platform(s) has(have) the most varied lower 25% of observations? F. Which video streaming platform(s) has(have) at least 75% of its observations less than or equal to 150? G. The upper extreme observation of Disney+ is approximately equal to the upper extreme of which video streaming platform(s)?Alpha is usually set at .05 but it does not have to be; this is the decision of the statistician. Alpha is usually set at .05 but it does not have to be; this is the decision of the statistician. True FalseWhich of the following eta-squared results would indicate a very weak relationship between the dependent and independent variables? .15 .35 65 .95
- Varric has conducted a within subjects ANOVA to determine if his band of pirates have significantly improved in their swashbuckling abilities over the past four months. The results of his analysis are as follows [F(3, 58) = 5.22, p = 0.07]. Should he run a post-hoc test? A. Yes, always run a post hoc test after conducting an ANOVA regardless of the result B. No, post hoc tests should only be conducted when an ANOVA yields a significant result C. No, post-hoc tests are not appropriate for a within subjects ANOVA D. Yes, post hoc tests should only be conducted when the ANOVA yields a non-significant resultA survey among the workers in a large manufacturing company was taken, in order to findout from which company the workers had purchased their mobile phones, and to find outwhether the choice of mobile phone company was related to the type of worker. The resultsare shown in the table below. ls there evidence, at 5% level, that the choice of Phone Company is independent of the type ofworker?A market researcher for a consumer electronics company wants to study the media viewing behavior of residence of a particular area. A random sample of 40 respondents is selected and each respondent is instructed to keep a detailed Record of time spent in gaged doing contact across all screens in a particular week. The results are as follows: continuing time per week: x=54 hours, s=4.1 hours. 8 respondents have high definition on at least one television set.