Many birds are injured or killed by flying into windows. it appears that birds do not see windows. can tilting windows down so that they reflect earth rather than sky reduce bird strikes? researchers placed six windows at the edge of a woods: two vertical, two tilted downward 20 degrees, and two tilted downward 40 degrees. during the next four months, there were 53 bird strikes: 31 on the vertical windows, 14 on the 20‑degree windows, and eight on the 40‑degree windows.

why is a chi‑square procedure appropriate? sort the statements into those that are true for the above data and are also conditions for the chi‑square procedure, and those that are false. make sure you sort all the tokens into either the true or false category.

true vs. false

each observation falls into just one of the three categorical outcomes.

all observations are larger than 15 .

the deviations of observed counts from expected counts are not too small.

the probability of each categorical outcome is the same for each observation.

all observed counts are larger than five.

all observations are independent.

the expected counts are all 17.68 , greater than five.

there is a fixed number of 53 observations.

the sample size is larger than ten.

Figure abcde is a regular pentagon. segment ae is located at a (2, 1) and e (4, 1). what is the perimeter of abcde? 4 units 6 units 8 units 10 units

When is g(x) = 0 for the function g(x) = 5.23x + 4?

Listed below are time intervals (min) between eruptions of a geyser. assume that the "recent" times are within the past few years, the "past" times are from around 20 years ago, and that the two samples are independent simple random samples selected from normally distributed populations. do not assume that the population standard deviations are equal. does it appear that the mean time interval has changed? is the conclusion affected by whether the significance level is 0.10 or 0.01? recent 78 90 90 79 57 101 62 87 71 87 81 84 57 80 74 103 62 past 88 89 93 94 65 85 85 92 87 91 89 91 follow the steps of hypothesis testing, including identifying the alternative and null hypothesis, calculating the test statistic, finding the p-value, and making a conclusions about the null hypothesis and a final conclusion that addresses the original claim. use a significance level of 0.10. is the conclusion affected by whether the significance level is 0.10 or 0.01? answer choices below: a) yes, the conclusion is affected by the significance level because h0 is rejected when the significance level is 0.01 but is not rejected when the significance level is 0.10. b) no, the conclusion is not affected by the significance level because h0 is not rejected regardless of whether a significance level of 0.10 or 0.01 is used. c) yes, the conclusion is affected by the significance level because h0 is rejected when the significance level is 0.10 but is not rejected when the significance level is 0.01. d) no, the conclusion is not affected by the significance level because h0 is rejected regardless of whether a significance level of 0.10 or 0.01 is used.