Which are examples of political problems the us experienced during the early 1920s? check all that apply. a. voters could not directly vote on issues. b. powerful politicians used their influence to gain profit and secure votes. c. voters could not directly choose their own us senators. d. secret ballots allowed party bosses to pressure or bully voters. e. city mangers lacked the professional skills of mayors.

i would say a. or c. because im in tenth grade civics right now and those sound like more political problems than the other ones.

a, c, &d.

Step-by-step explanation:

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;