Question: Hello, can I get help with the following? #1: Which of the following is correct about a bootstrap confidence interval? Select all that apply. a.
Hello, can I get help with the following?
#1: Which of the following is correct about a bootstrap confidence interval? Select all that apply.
a. A confidence interval provides an estimate of the uncertainty in the sample measure
b. A bootstrap pivotal confidence interval assumes that the observed sample measure is a pivot such that the variability in sample measures around the true population measure is the same as the variability of measures from the bootstrap resamples around the observed measure
c. A 95% confidence interval obtained using the bootstrap approach can be interpreted as "we can be 95% sure that the true measure is in the interval provided"
d. A confidence interval provides an estimate of the precision of an effect size
#2: Suppose Candice, an intern, computed a 99% bootstrap confidence interval for the mean heights of 5-year olds as [100 cm, 120 cm] at a pediatrician's office and her colleague, Bob, computed a 95% confidence interval for the heights of a different set of 5-year olds visiting the same office as [105 cm, 115 cm]. Whose CI reports greater uncertainty?
a. Maria's because her CI is wider
b. Tom's because his CI is more precise
c. Both samples have pretty similar uncertainty
d. Not enough information is provided to answer this question
#3: What type of box model is suitable for computing the bootstrap confidence interval for paired datasets?
a. Big-box resampling with replacement
b. Two-box resampling with replacement
c. Re-centered two-box with replacement
d. One-box paired deltas without replacement
e. One-box paired deltas with replacement
#4: A graduate student asks whether there is an association between marital status (single, married, or divorced) and the amount of time per week spent using a mobile device. Which of the following Null Hypothesis Standard Tests would be most appropriate?
a. One-way ANOVA
b. Comparing two groups (paired)
c. Repeated measures ANOVA
d. Comparing two groups (independent samples)
e. Two-way ANOVA
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