2-1:Population & Sampling

In a survey of 3121 people, 412 are under-vaccinated. What is the proportion of under-vaccinated people in the local population? Convert to percent

• 1.3%

• 3.5%

• 13%

• 35%

Answer explanation

412/3121=.13*100=13%

Tags

CCSS.HSS.IC.B.4

The calorie counts on a menu at a new restaurant were correct for 22 out of 58 menu items. Find the sample proportion? round to the hundreths

• .379

• 2.74

• .562

• 2.63

Tags

CCSS.HSS.IC.B.4

A carnival guesser was able to correctly guess the age of 118 carnival goers out of a total of 196 people. What is the sample proportion? Round to the hundredths

• 1.661

• .306

• .602

• 2.632

Tags

CCSS.HSS.IC.B.4

Among 1,820 randomly selected adults, ages 25–40, surveyed by the Center for Disease Control, 273 reported that they were current cigarette smokers. Which represents the sample proportion?

• 1820

  ---------

  273

• 25

  -----

  1820

• 273

  -----

  1820

• 40

  -----

  273

Tags

CCSS.HSS.IC.B.4

A national nutrition study reported that 649 out of 1,546 women tested had vitamin D deficiency. Which represents the sample proportion?

• 1546

  -----

  649

• 649

  ------

  1546

• (1546-649)

  ---------------

  1546

Tags

CCSS.HSS.IC.B.4

• 37

  -----

  552

• 49

  -----

  276

• 263

  -----

  552

• 77

  -----

  276

Answer explanation

simplify the answer. 185/2760

Tags

CCSS.7.SP.A.2

• .91

• 1.09

• 10.67

• 0.09

Tags

CCSS.HSS.IC.B.4

Which is better to have? A larger sample or a small sample.

• Large Sample

• Small Sample

Tags

CCSS.6.SP.A.2

Statistics allows us to make predictions about the population

• True

• False

Tags

CCSS.7.SP.A.2

All sample contains all elements of a group.

• True

• False

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1