The Hill of Tara is located in south-central Meath, not far from Dublin, Ireland. Tara is of great cultural and archaeological importance, since it is by legend the seat of the ancient high kings of Ireland. For more information, seeTara: An Archaeological Survey, by Conor Newman, Royal Irish Academy, Dublin.

Magnetic surveying is one technique used by archaeologists to determine anomalies arising from variations in magnetic susceptibility. Unusual changes in magnetic susceptibility might (or might not) indicate an important archaeological discovery. Letxbe a random variable that represents a magnetic susceptibility (MS) reading for a randomly chosen site on the Hill of Tara. A random sample of120 sitesgave the readings shown in the table below.Magnetic Susceptibility Readings,

centimeter-gram-second10⁶(cmg10⁶)CommentMagnetic

SusceptibilityNumber of

ReadingsEstimated

Probability"cool"0x< 10

3030/120 = 0.25"neutral"10x< 20

5454/120 = 0.45"warm"20x< 30

1818/120 = 0.15"very interesting"30x< 40

1212/120 = 0.10"hot spot"40x

66/120 = 0.05What is a statistical experiment? How could the magnetic susceptibility intervals0x< 10,

10x< 20,

and so on, be considered events in the sample space of all possible readings?

A statistical experiment is any

---Select---

nonrandom activity

probability

random activity

simple event

sample space

that results in a definite

---Select---

outcome

probability

relative frequency

probability distribution

normal distribution

.Each possible outcome has an associated

---Select---

outcome

probability

relative frequency

probability distribution

normal distribution

,usually taken from

---Select---

an outcome

a probability

a relative frequency

a probability distribution

a normal distribution

.For this experiment, the outcomes for magnetic susceptibility are

---Select---

positive values

negative values

non-negative values

non-positive values

that can be assigned to one of the five intervals. Because each interval is

---Select---

a collection of one or more outcomes

a verbal description

an estimated probability

a collection of one or more readings

a sample space

,it can be considered an event in the sample space of all possible readings.