In a t-test, if the resultant t value is -2.72 and p < 0.05, what is the interpretation?

Q: On an exam, Tom scores 12 points above the mean and has acore of z200. The standard deviation for…

A: Z-score is the value of the ratio of the difference between the raw score and the population mean by…

Q: State whether the standardized test statistic t indicates that you should reject the null…

A: Decision rule : Reject Ho if test statistic t &lt; -1.654

Q: What is the z-score corresponding to P15 three decimal places

A: z-distribution represents the standard normal distribution. Standard normal distribution has bell…

Q: Claim: Fewer than 93% of adults have a cell phone. In a reputable poll of 1190 adults, 84% said that…

A: It is of interest to test the claim that fewer than 93% of adults have a cell phone.

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A:

Q: The average wait time to get seated at a popular restaurant in the city on a Friday night is 9…

A: Since you have posted a question with multiple subparts, we will solve first three subparts for you.…

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: Given: n=582 and p=58%=0.58. From the given information,H0:p=0.5H1:p&gt;0.5

Q: Claim: Fewer than 95% of adults have a cell phone. In a reputable poll of 1093 adults, 86% said that…

A: p=95% , n=1093, p^=86%

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: From the provided information, Sample size (n) = 420 Sample proportion (p̂) = 0.64

Q: Claim: Fewer than 91% of adults have a cell phone. In a reputable poll of 1101 adults, 81% said that…

A: We can use the null hypothesis that the true proportion of adults who have a cell phone is equal to…

Q: The table below shows the number of academic ranks for four different types of marital status. ere…

A: Given, Observed frequency table : This is a Chi-square test for independence. 1) Null and…

Q: A cereal manufacturer claims that the weight of a box of cereal labeled as weighing 12 ounces has a…

A:

Q: Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1082 adults, 85% said that…

A: Given  n=1082, pcap=85%=0.85, p=94%=0.94 Ho:p=0.94 vs H1: p&lt;0.94

Q: Claim. Fewer than 92% of adults have a cell phone. In a reputable poll of 1111 adults, 86% said that…

A: given data  claim : P&lt;0.92 n = 1111 p^  = 0.86test statistic = ?

Q: Claim: The mean pulse rate (in beats per minute) of adult males is equal to 69 bpm. For a random…

A: given data n = 142x¯ =70.4s = 10.6claim : μ =69

Q: In a poll of 520 human resource professionals, 45.6% said that body piercings and tattoos were big…

A:

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: The sample size is 601, and sample proportion is 0.60. That is, n=601,p^=0.60. The population…

Q: A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas.…

A: The p-value is given by 0.0298

Q: Claim: Fewer than 92% of adults have a cell phone. In a reputable poll of 1246 adults, 86% said that…

A: Suppose p is the true population proportion of adults who have a cell phone.

Q: Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the…

A: Solution: It is given that, Population mean, 70 Standard deviation, 5 Given that Cody took his first…

Q: Several psychology students are unprepared for a surprise true/false test with 24 questions, and all…

A: It is given that several psychology students are unprepared for a surprise true/false test with 24…

Q: What does df​ denote?   B. The number of degrees of freedom Your answer is correct.     The value of…

A: Sample size is n = 38 Claim is that the population mean is greater than 94 second.

Q: A researcher reports the results of a t-test using APA format as t(126)= 2.875, p <.05, d = 1.33…

A: The criteria of rejecting or accepting the null hypothesis depend upon the level of significance. If…

Q: Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1051 adults, 88% said that…

A: The random variable X follows binomial distribution. The population proportion is 0.94. We have to…

Q: Claim: Fewer than 97​% of adults have a cell phone. In a reputable poll of 1115 adults, 92​% said…

A: Given,n=1115p^=0.92claim:  Fewer than 97​% of adults have a cell phone.

Q: Claim: Fewer than 92% of adults have a cell phone. In a reputable poll of 1175 adults, 83% said that…

A:

Q: Claim: Fewer than 94​% of adults have a cell phone. In a reputable poll of 1148 ​adults, 88​% said…

A:

Q: Claim: Fewer than 96% of adults have a cell phone. In a reputable poll of 1227 adults, 89% said that…

A: Answer - Claim: Fewer than 96% of adults have a cell phone. i.e  p = 0.96               In a…

Q: Claim: Fewer than 95% of adults have a cell phone. In a reputable poll of 1189 adults, 86% said that…

A:

Q: Fill in the blanks to complete the following statements. (a) For the shape of the distribution of…

A: We have to find requirement and mean of sample propertion.

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A:

Q: Claim: Fewer than 96% of adults have a cell phone. In a reputable poll of 1132 adults, 86% said that…

A: Solution-: Given: n=295,P0=96%=0.96, p^=86%=0.86 We want to find test statistic=?

Q: Suppose a sales manager wants to compare different sales promotions. He chooses 5 different…

A: Given that,No. of different promotions No. of random stores Total no. of observations Test statistic…

Q: Do rats take the same amount of time on average than hamsters to travel through a maze? The tab…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: ​Claim: Fewer than 93% of adults have a cell phone. In a reputable poll of 1135 adults, 86​% said…

A:

Q: The value of the test statistic is Round to two decimal places as needed.)

A: Let P be the population proportion of adults have cell phone P=96% = 0.96  Sample of size n= 1186…

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A:

Q: The mean height of women over twenty years of age is 63.7 inches A researcher conducts a hypothesis…

A: Mean height, The researcher wants to test the hypotheses,Sample size,  Sample mean, p-value for the…

Q: What is the equation used when computing the degree of freedom for a t-test about the mean? On On-1…

A: We have given that,  What is the equation used when computing the degree of freedom for t-test…

Q: T45

A: The null hypothesis (H0) is that the mean social marginality scores are the same for all four age…

Q: Q28 Abdullah performed a left-tailed test to determine whether ZU male students spend, on average,…

A:

Q: Claim: Fewer than 91% of adults have a cell phone. In a reputable poll of 1101 adults, 82% said that…

A:

Q: Claim: Fewer than 97​% of adults have a cell phone. In a reputable poll of 1077 ​adults, 87​% said…

A: State the hypotheses.

Q: Claim: Fewer than 93% of adults have a cell phone. In a reputable poll of 1234 adults, 83% said that…

A: Sample size , n = 1234 p = 93%  = 0.93 p^ = 83% = 0.83

Q: Claim: Fewer than 96% of adults have a cell phone. In a reputable poll of 1076 adults, 89% said that…

A:

Q: Claim: Most adults would erase all of their personal information online if they could. A software…

A: From the provided information, Sample size (n) = 460 Sample proportion (p̂) = 0.58