Anewspaper published an article about a study in which researchers subjected laboratory gloves to stress. among 225 vinyl gloves, 60% leaked viruses. among 225 latex gloves, 9% leaked viruses. using the accompanying display of the technology results, and using a 0.05 significance level, test the claim that vinyl gloves have a greater virus leak rate than latex gloves. let vinyl gloves be population 1.
technology results:
pooled proportion: 0.35
test statistic, z: 11.2921
critical z: 1.6449
p-value: 0.
90? % confidence? interval:
0.4441890 < p1, p2 < 0.5691444
a) what are the null and alternative hypotheses?
b) identify the test statistic
c) identify the p-value
d) what is the conclusion for the test?

What does it mean by solve the exponential equation for x?

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126 a. the attendance was never the same at both plays. b. the attendance was the same on day 5. the attendance was 231 at both plays on that day. c. the attendance was the same on day 13. the attendance was 295 at both plays on that day. d. the attendance was the same on days 5 and 13. the attendance at both plays on those days was 231 and 295 respectively.

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f