Mathematics, 26.12.2019 19:31 galaxychild101
Asurvey of 70 students from a high school is conducted. from this sample, it is found that 58 students have sent a text message on their smartphone at least once today, 21 have uploaded at least one "selfie" on their smartphone today, and 12 have done both.
text message have not sent a text message total
have taken a selfie 12 21
have not taken a selfie
total 58 70
complete the rest of the two-way frequency table above. part a: how many students have neither sent a text message nor taken a selfie today? part b: what percentage of students in the school (rounded to the nearest whole percent) have sent a text message or have taken a selfie at least once today?
Answers: 1
Mathematics, 21.06.2019 23:50
The federal reserve controls certain interest rates in the united states. investors often try to speculate as to whether the federal reserve will raise or lower rates and by how much. suppose a company conducts extensive interviews with financial analysts, and as a result, predicts that "thefed" will increase rates by an average of 0.25 percentage points every six months for the forseeable future. which type of equation could be used to model the predicted interest rates over the next several years, assuming no other significant changes? a) a linear equation b) a quadratic equation c) a polynomial equation d) an exponential equation
Answers: 3
Mathematics, 22.06.2019 00:00
Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?
Answers: 2
Asurvey of 70 students from a high school is conducted. from this sample, it is found that 58 studen...
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